25816829939916 has 24 divisors (see below), whose sum is σ = 60241732405680. Its totient is φ = 8605258187712.

The previous prime is 25816829939911. The next prime is 25816829939939. The reversal of 25816829939916 is 61993992861852.

It is not an unprimeable number, because it can be changed into a prime (25816829939911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43668171 + ... + 44255426.

It is an arithmetic number, because the mean of its divisors is an integer number (2510072183570).

Almost surely, 2^{25816829939916} is an apocalyptic number.

It is an amenable number.

25816829939916 is an abundant number, since it is smaller than the sum of its proper divisors (34424902465764).

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

25816829939916 is a wasteful number, since it uses less digits than its factorization.

25816829939916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87948073 (or 87948071 counting only the distinct ones).

The product of its digits is 906992640, while the sum is 78.

The spelling of 25816829939916 in words is "twenty-five trillion, eight hundred sixteen billion, eight hundred twenty-nine million, nine hundred thirty-nine thousand, nine hundred sixteen".