25612942818 has 32 divisors (see below), whose sum is σ = 53972683200. Its totient is φ = 8080693056.

The previous prime is 25612942801. The next prime is 25612942877. The reversal of 25612942818 is 81824921652.

It is a super-2 number, since 2×25612942818² (a number of 22 digits) contains 22 as substring.

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, 16780 + ... + 226952.

It is an arithmetic number, because the mean of its divisors is an integer number (1686646350).

Almost surely, 2^25612942818 is an apocalyptic number.

25612942818 is an abundant number, since it is smaller than the sum of its proper divisors (28359740382).

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

25612942818 is a wasteful number, since it uses less digits than its factorization.

25612942818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211266.

The product of its digits is 552960, while the sum is 48.

The spelling of 25612942818 in words is "twenty-five billion, six hundred twelve million, nine hundred forty-two thousand, eight hundred eighteen".