25139585020 has 24 divisors (see below), whose sum is σ = 57592504368. Its totient is φ = 9141667200.

The previous prime is 25139584957. The next prime is 25139585033. The reversal of 25139585020 is 2058593152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57135201 + ... + 57135640.

It is an arithmetic number, because the mean of its divisors is an integer number (2399687682).

Almost surely, 2^25139585020 is an apocalyptic number.

25139585020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25139585020 is an abundant number, since it is smaller than the sum of its proper divisors (32452919348).

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

25139585020 is a wasteful number, since it uses less digits than its factorization.

25139585020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114270861 (or 114270859 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 25139585020 in words is "twenty-five billion, one hundred thirty-nine million, five hundred eighty-five thousand, twenty".