25256565028 has 24 divisors (see below), whose sum is σ = 45775183104. Its totient is φ = 12185510400.

The previous prime is 25256565017. The next prime is 25256565041. The reversal of 25256565028 is 82056565252.

It is a super-3 number, since 3×25256565028³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932733 + ... + 959428.

It is an arithmetic number, because the mean of its divisors is an integer number (1907299296).

Almost surely, 2^25256565028 is an apocalyptic number.

It is an amenable number.

25256565028 is a deficient number, since it is larger than the sum of its proper divisors (20518618076).

25256565028 is a wasteful number, since it uses less digits than its factorization.

25256565028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892283 (or 1892281 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 46.

The spelling of 25256565028 in words is "twenty-five billion, two hundred fifty-six million, five hundred sixty-five thousand, twenty-eight".