25512528957 has 16 divisors (see below), whose sum is σ = 34172479488. Its totient is φ = 16930591920.

The previous prime is 25512528941. The next prime is 25512528959. The reversal of 25512528957 is 75982521552.

It is not a de Polignac number, because 25512528957 - 2⁴ = 25512528941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25512528959) 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, 826198 + ... + 856520.

It is an arithmetic number, because the mean of its divisors is an integer number (2135779968).

Almost surely, 2^25512528957 is an apocalyptic number.

It is an amenable number.

25512528957 is a deficient number, since it is larger than the sum of its proper divisors (8659950531).

25512528957 is a wasteful number, since it uses less digits than its factorization.

25512528957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31600.

The product of its digits is 2520000, while the sum is 51.

The spelling of 25512528957 in words is "twenty-five billion, five hundred twelve million, five hundred twenty-eight thousand, nine hundred fifty-seven".