25164331256 has 16 divisors (see below), whose sum is σ = 47191366800. Its totient is φ = 12579966784.

The previous prime is 25164331237. The next prime is 25164331273. The reversal of 25164331256 is 65213346152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225701 + ... + 318228.

It is an arithmetic number, because the mean of its divisors is an integer number (2949460425).

Almost surely, 2^25164331256 is an apocalyptic number.

It is an amenable number.

25164331256 is a deficient number, since it is larger than the sum of its proper divisors (22027035544).

25164331256 is a wasteful number, since it uses less digits than its factorization.

25164331256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549718 (or 549714 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The spelling of 25164331256 in words is "twenty-five billion, one hundred sixty-four million, three hundred thirty-one thousand, two hundred fifty-six".