Advisors Asset Management, Inc.
18925 Base Camp Road
Monument, Colorado 80132

March 15, 2012

Securities and Exchange Commission
100 F Street, NE
Washington, D.C. 20549

Re: Advisors Disciplined Trust 825
(File No. 333-178267) (CIK 1533789)

Ladies/Gentlemen:

In accordance with the provisions of Rule 497(j) of Regulation C under the Securities Act of 1933 (the "Securities Act") this letter serves to certify that the most recent amendment to the registration statement of Form S-6 for the above captioned unit investment trust does not differ from that which would have been filed pursuant to Rule 497(b) of the Securities Act. The most recent amendment to the registration statement was filed electronically with the Commission on March 14, 2012.

Very truly yours,

ADVISORS DISCIPLINED TRUST 825

By: ADVISORS ASSET MANAGEMENT, INC.

By /s/ ALEX R. MEITZNER
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 Alex R. Meitzner
 Senior Vice President