25256899865252 has 24 divisors (see below), whose sum is σ = 48320967895200. Its totient is φ = 11455825703360.

The previous prime is 25256899865191. The next prime is 25256899865257.

It is a happy number.

25256899865252 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 25256899865252.

It is not an unprimeable number, because it can be changed into a prime (25256899865257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614562377 + ... + 614603472.

It is an arithmetic number, because the mean of its divisors is an integer number (2013373662300).

Almost surely, 2^{25256899865252} is an apocalyptic number.

25256899865252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25256899865252 is a deficient number, since it is larger than the sum of its proper divisors (23064068029948).

25256899865252 is a wasteful number, since it uses less digits than its factorization.

25256899865252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229166331 (or 1229166329 counting only the distinct ones).

The product of its digits is 1866240000, while the sum is 74.

The spelling of 25256899865252 in words is "twenty-five trillion, two hundred fifty-six billion, eight hundred ninety-nine million, eight hundred sixty-five thousand, two hundred fifty-two".