25257678872 has 64 divisors (see below), whose sum is σ = 50824609920. Its totient is φ = 11725060608.

The previous prime is 25257678871. The next prime is 25257678907. The reversal of 25257678872 is 27887675252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25257678871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10236983 + ... + 10239449.

It is an arithmetic number, because the mean of its divisors is an integer number (794134530).

Almost surely, 2^25257678872 is an apocalyptic number.

It is an amenable number.

25257678872 is an abundant number, since it is smaller than the sum of its proper divisors (25566931048).

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

25257678872 is a wasteful number, since it uses less digits than its factorization.

25257678872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480 (or 3476 counting only the distinct ones).

The product of its digits is 26342400, while the sum is 59.

The spelling of 25257678872 in words is "twenty-five billion, two hundred fifty-seven million, six hundred seventy-eight thousand, eight hundred seventy-two".