25575325256 has 32 divisors (see below), whose sum is σ = 52099520760. Its totient is φ = 11699530752.

The previous prime is 25575325229. The next prime is 25575325273. The reversal of 25575325256 is 65252357552.

It can be written as a sum of positive squares in 4 ways, for example, as 16075704100 + 9499621156 = 126790^2 + 97466^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25575325256.

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, 1076375 + ... + 1099878.

Almost surely, 2^25575325256 is an apocalyptic number.

25575325256 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25575325256 is an abundant number, since it is smaller than the sum of its proper divisors (26524195504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25575325256 is a wasteful number, since it uses less digits than its factorization.

25575325256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176385 (or 2176381 counting only the distinct ones).

The product of its digits is 3150000, while the sum is 47.

The spelling of 25575325256 in words is "twenty-five billion, five hundred seventy-five million, three hundred twenty-five thousand, two hundred fifty-six".