25638134700080 has 80 divisors (see below), whose sum is σ = 68186288566080. Its totient is φ = 8782204440576.

The previous prime is 25638134700049. The next prime is 25638134700097. The reversal of 25638134700080 is 8000743183652.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 25638134699998 and 25638134700034.

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, 20252765 + ... + 21481404.

It is an arithmetic number, because the mean of its divisors is an integer number (852328607076).

Almost surely, 2^{25638134700080} is an apocalyptic number.

25638134700080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25638134700080 is an abundant number, since it is smaller than the sum of its proper divisors (42548153866000).

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

25638134700080 is a wasteful number, since it uses less digits than its factorization.

25638134700080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41735286 (or 41735280 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 25638134700080 in words is "twenty-five trillion, six hundred thirty-eight billion, one hundred thirty-four million, seven hundred thousand, eighty".