25055055780 has 96 divisors (see below), whose sum is σ = 70509035520. Its totient is φ = 6647648640.

The previous prime is 25055055749. The next prime is 25055055791. The reversal of 25055055780 is 8755055052.

It is a super-2 number, since 2×25055055780² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11351437 + ... + 11353643.

It is an arithmetic number, because the mean of its divisors is an integer number (734469120).

Almost surely, 2^25055055780 is an apocalyptic number.

25055055780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25055055780 is an abundant number, since it is smaller than the sum of its proper divisors (45453979740).

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

25055055780 is a wasteful number, since it uses less digits than its factorization.

25055055780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089 (or 3087 counting only the distinct ones).

The product of its (nonzero) digits is 350000, while the sum is 42.

The spelling of 25055055780 in words is "twenty-five billion, fifty-five million, fifty-five thousand, seven hundred eighty".