1625625

Appears in sequences

• Squares of odd triangular numbers.at n=25A014736
• Numbers that are the sum of 2 nonzero squares in exactly 7 ways.at n=28A025290
• Squares composed of three overlapping subsquares, which overlap by one digit.at n=1A048425
• Numbers k such that sigma(phi(k^3)) = phi(sigma(k^3)).at n=9A063824
• Numbers that have exactly 9 representations as a k-gonal number, P(n,k) = n*((k-2)*n - (k-4))/2, k and n >= 3.at n=20A321159
• Numbers k such that (65*k)^2 can be represented in exactly 4 ways as the sum of a positive square and a positive fourth power.at n=26A346594