25559331081616 has 40 divisors (see below), whose sum is σ = 53236680670080. Its totient is φ = 11849454716544.

The previous prime is 25559331081601. The next prime is 25559331081629. The reversal of 25559331081616 is 61618013395552.

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, 894419191 + ... + 894447766.

It is an arithmetic number, because the mean of its divisors is an integer number (1330917016752).

Almost surely, 2^{25559331081616} is an apocalyptic number.

It is an amenable number.

25559331081616 is an abundant number, since it is smaller than the sum of its proper divisors (27677349588464).

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

25559331081616 is a wasteful number, since it uses less digits than its factorization.

25559331081616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788867031 (or 1788867025 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 55.

The spelling of 25559331081616 in words is "twenty-five trillion, five hundred fifty-nine billion, three hundred thirty-one million, eighty-one thousand, six hundred sixteen".