25644131080 has 32 divisors (see below), whose sum is σ = 57860049600. Its totient is φ = 10229073856.

The previous prime is 25644131041. The next prime is 25644131081. The reversal of 25644131080 is 8013144652.

It is not an unprimeable number, because it can be changed into a prime (25644131081) 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, 878542 + ... + 907261.

It is an arithmetic number, because the mean of its divisors is an integer number (1808126550).

Almost surely, 2^25644131080 is an apocalyptic number.

25644131080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25644131080 is an abundant number, since it is smaller than the sum of its proper divisors (32215918520).

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

25644131080 is a wasteful number, since it uses less digits than its factorization.

25644131080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786173 (or 1786169 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 25644131080 in words is "twenty-five billion, six hundred forty-four million, one hundred thirty-one thousand, eighty".