25256804484 has 12 divisors (see below), whose sum is σ = 58932543824. Its totient is φ = 8418934824.

The previous prime is 25256804401. The next prime is 25256804491. The reversal of 25256804484 is 48440865252.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052366842 + ... + 1052366865.

Almost surely, 2^25256804484 is an apocalyptic number.

It is an amenable number.

25256804484 is an abundant number, since it is smaller than the sum of its proper divisors (33675739340).

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

25256804484 is a wasteful number, since it uses less digits than its factorization.

25256804484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104733714 (or 2104733712 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 48.

The spelling of 25256804484 in words is "twenty-five billion, two hundred fifty-six million, eight hundred four thousand, four hundred eighty-four".