25105574872 has 32 divisors (see below), whose sum is σ = 53843742720. Its totient is φ = 10750315680.

The previous prime is 25105574869. The next prime is 25105574881. The reversal of 25105574872 is 27847550152.

It is a happy number.

It is a congruent number.

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, 125848 + ... + 256999.

It is an arithmetic number, because the mean of its divisors is an integer number (1682616960).

Almost surely, 2^25105574872 is an apocalyptic number.

It is an amenable number.

25105574872 is an abundant number, since it is smaller than the sum of its proper divisors (28738167848).

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

25105574872 is a wasteful number, since it uses less digits than its factorization.

25105574872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384031 (or 384027 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 46.

The spelling of 25105574872 in words is "twenty-five billion, one hundred five million, five hundred seventy-four thousand, eight hundred seventy-two".