25105596780 has 48 divisors (see below), whose sum is σ = 76686188544. Its totient is φ = 6086205120.

The previous prime is 25105596731. The next prime is 25105596793. The reversal of 25105596780 is 8769550152.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19018732 + ... + 19020051.

It is an arithmetic number, because the mean of its divisors is an integer number (1597628928).

Almost surely, 2^25105596780 is an apocalyptic number.

25105596780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25105596780 is an abundant number, since it is smaller than the sum of its proper divisors (51580591764).

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

25105596780 is a wasteful number, since it uses less digits than its factorization.

25105596780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38038806 (or 38038804 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 48.

The spelling of 25105596780 in words is "twenty-five billion, one hundred five million, five hundred ninety-six thousand, seven hundred eighty".