25590857560 has 32 divisors (see below), whose sum is σ = 60609927600. Its totient is φ = 9697587840.

The previous prime is 25590857549. The next prime is 25590857569. The reversal of 25590857560 is 6575809552.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25590857498 and 25590857507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25590857569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16835331 + ... + 16836850.

Almost surely, 2^25590857560 is an apocalyptic number.

25590857560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25590857560 is an abundant number, since it is smaller than the sum of its proper divisors (35019070040).

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

25590857560 is a wasteful number, since it uses less digits than its factorization.

25590857560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33672211 (or 33672207 counting only the distinct ones).

The product of its (nonzero) digits is 3780000, while the sum is 52.

The spelling of 25590857560 in words is "twenty-five billion, five hundred ninety million, eight hundred fifty-seven thousand, five hundred sixty".