25252235560 has 32 divisors (see below), whose sum is σ = 56823473160. Its totient is φ = 10099837696.

The previous prime is 25252235549. The next prime is 25252235579. The reversal of 25252235560 is 6553225252.

It can be written as a sum of positive squares in 4 ways, for example, as 20125961956 + 5126273604 = 141866^2 + 71598^2 .

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, 436662 + ... + 491098.

Almost surely, 2^25252235560 is an apocalyptic number.

25252235560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25252235560 is an abundant number, since it is smaller than the sum of its proper divisors (31571237600).

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

25252235560 is a wasteful number, since it uses less digits than its factorization.

25252235560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66045 (or 66041 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 37.

The spelling of 25252235560 in words is "twenty-five billion, two hundred fifty-two million, two hundred thirty-five thousand, five hundred sixty".