40256510065025 has 24 divisors (see below), whose sum is σ = 52856142061824. Its totient is φ = 30309802041600.

The previous prime is 40256510065021. The next prime is 40256510065049. The reversal of 40256510065025 is 52056001565204.

It is not a de Polignac number, because 40256510065025 - 2² = 40256510065021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40256510065021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11733980 + ... + 14771570.

It is an arithmetic number, because the mean of its divisors is an integer number (2202339252576).

Almost surely, 2^{40256510065025} is an apocalyptic number.

It is an amenable number.

40256510065025 is a deficient number, since it is larger than the sum of its proper divisors (12599631996799).

40256510065025 is a wasteful number, since it uses less digits than its factorization.

40256510065025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068801 (or 3068796 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 40256510065025 in words is "forty trillion, two hundred fifty-six billion, five hundred ten million, sixty-five thousand, twenty-five".