25756474526564 has 12 divisors (see below), whose sum is σ = 45077439013488. Its totient is φ = 12877206237000.

The previous prime is 25756474526537. The next prime is 25756474526579. The reversal of 25756474526564 is 46562547465752.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25756474526494 and 25756474526503.

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, 257700362 + ... + 257800289.

It is an arithmetic number, because the mean of its divisors is an integer number (3756453251124).

Almost surely, 2^{25756474526564} is an apocalyptic number.

It is an amenable number.

25756474526564 is a deficient number, since it is larger than the sum of its proper divisors (19320964486924).

25756474526564 is a wasteful number, since it uses less digits than its factorization.

25756474526564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515513146 (or 515513144 counting only the distinct ones).

The product of its digits is 1693440000, while the sum is 68.

The spelling of 25756474526564 in words is "twenty-five trillion, seven hundred fifty-six billion, four hundred seventy-four million, five hundred twenty-six thousand, five hundred sixty-four".