25755780807558 has 24 divisors (see below), whose sum is σ = 56719014567696. Its totient is φ = 8444518297200.

The previous prime is 25755780807511. The next prime is 25755780807577. The reversal of 25755780807558 is 85570808755752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11728496538 + ... + 11728498733.

It is an arithmetic number, because the mean of its divisors is an integer number (2363292273654).

Almost surely, 2^{25755780807558} is an apocalyptic number.

25755780807558 is an abundant number, since it is smaller than the sum of its proper divisors (30963233760138).

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

25755780807558 is a wasteful number, since it uses less digits than its factorization.

25755780807558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23456995340 (or 23456995337 counting only the distinct ones).

The product of its (nonzero) digits is 1097600000, while the sum is 72.

The spelling of 25755780807558 in words is "twenty-five trillion, seven hundred fifty-five billion, seven hundred eighty million, eight hundred seven thousand, five hundred fifty-eight".