25712052525 has 18 divisors (see below), whose sum is σ = 46053143370. Its totient is φ = 13713094560.

The previous prime is 25712052517. The next prime is 25712052557. The reversal of 25712052525 is 52525021752.

25712052525 is a `hidden beast` number, since 2 + 5 + 7 + 120 + 5 + 2 + 525 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 437730084 + 25274322441 = 20922^2 + 158979^2 .

It is not a de Polignac number, because 25712052525 - 2³ = 25712052517 is a prime.

It is a super-2 number, since 2×25712052525² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25712052525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 57137670 + ... + 57138119.

It is an arithmetic number, because the mean of its divisors is an integer number (2558507965).

Almost surely, 2^25712052525 is an apocalyptic number.

25712052525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25712052525 is a deficient number, since it is larger than the sum of its proper divisors (20341090845).

25712052525 is a wasteful number, since it uses less digits than its factorization.

25712052525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114275805 (or 114275797 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 36.

The spelling of 25712052525 in words is "twenty-five billion, seven hundred twelve million, fifty-two thousand, five hundred twenty-five".