Padding a numeric field

For some reason I'm not getting the padding. I have a field Dollar_Amount there are 3 recs that have a dollar amount value. The amounts are 250, 200, 1125. i have a second field that is a sum of Dollar_Amount named Total_Amount. The values are displaying as 250, 200 and 1125, and the Total is displaying as 1575. I want them to display as 0000000000250, 0000000000200, 0000000001125 and 00000000000001575.
They are defined as:
Dollar_Amt  (decimal (13, 0), null)
Total_Amount  (decimal (17,0), null)

DECLARE @Cnt int;
DECLARE @Amt int;

BEGIN                                                -- HDAJ ACSB 022208 082815      6 Byte date(mmddyy) 6 byte time (hhmss) 2 seperate fields
      INSERT INTO dbo.tbl_Output (Record_Code, Institution, hdrDate, hdrTime)
      Values ('HDAJ','ACSB', replace(CONVERT(CHAR(8), getdate(), 10), '-', ''),  
      replace(CONVERT(CHAR(8), GETDATE(), 108), ':', ''))

      INSERT INTO dbo.tbl_Output (Record_Code, AJ_Batch_Type, AJ_Batch_Code,
                  AJ_Batch_Num, AccountNumber, AJ_Tran_Code, Merchant_No, AJ_Dollar_Amt, Reason_Code, AJ_Merch_Descr, [Timestamp])
      SELECT AJ_Record_Code, AJ_Batch_Type, AJ_Batch_Code, AJ_Batch_Num,
                        AccountNumber, AJ_Tran_Code, Merchant_No,
                        Right('0000000000000' + Cast(AJ_Amount as varchar (13)), 13),
                        Reason_Code, AJ_Merch_Descr, [Timestamp]
      FROM dbo.tblArchive

      SET @Cnt = (SELECT Count(AJ_Record_Code) FROM dbo.tblArchive GROUP by AJ_Record_Code) + 2
      SET @Amt = (SELECT Sum(AJ_Amount) FROM dbo.tblArchive GROUP by AJ_Record_Code)
      INSERT INTO dbo.tbl_Output
                        (Record_Code,
                        Institution,
                        Record_Count,
                        Adj_Amount)
      SELECT 'TLAJ','ACSB', Right('00000' + Cast(@Cnt as varchar (5)), 5),
                  Right('00000000000000000' + Cast(@Amt as varchar (17)), 17)
END
END

Angel1111 thanks for responding so quickly.
Adj_Amount int, it was nvarchar but I changed it when that didn't work. My values are 200,, 250, 1125 and 1575 (whch is the sum of the first three values)
I want 0000000000200; 0000000000250; 0000000001125
00000000000001575

The entire field s/b padded with zeros or numeric value.

You are 100% correct I should know that from coding VB. I changed the field and now it works just fine. Thanks for everything Angellll