25231055656 has 16 divisors (see below), whose sum is σ = 47625736500. Its totient is φ = 12530859264.

The previous prime is 25231055621. The next prime is 25231055737. The reversal of 25231055656 is 65655013252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18953028900 + 6278026756 = 137670^2 + 79234^2 .

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, 10582305 + ... + 10584688.

Almost surely, 2^25231055656 is an apocalyptic number.

It is an amenable number.

25231055656 is a deficient number, since it is larger than the sum of its proper divisors (22394680844).

25231055656 is a wasteful number, since it uses less digits than its factorization.

25231055656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21167148 (or 21167144 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 25231055656 in words is "twenty-five billion, two hundred thirty-one million, fifty-five thousand, six hundred fifty-six".