25597468688 has 120 divisors (see below), whose sum is σ = 56060661888. Its totient is φ = 11309760000.

The previous prime is 25597468681. The next prime is 25597468691. The reversal of 25597468688 is 88686479552.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25597468681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10033013 + ... + 10035563.

Almost surely, 2^25597468688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25597468688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28030330944).

25597468688 is an abundant number, since it is smaller than the sum of its proper divisors (30463193200).

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

25597468688 is a wasteful number, since it uses less digits than its factorization.

25597468688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725 (or 2708 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 68.

The spelling of 25597468688 in words is "twenty-five billion, five hundred ninety-seven million, four hundred sixty-eight thousand, six hundred eighty-eight".