47725

Appears in sequences

• Centered tetrahedral numbers.at n=41A005894
• Numbers k such that k and k^2 use only the digits 2, 4, 5, 6 and 7.at n=37A137094
• Smallest odd number greater than any previous term such that it divides the concatenation of all the previous terms and itself; begin with 1.at n=19A228806
• Numbers n such that the decimal expansions of both n and n^2 have 2 as smallest digit and 7 as largest digit.at n=18A257123