979892111025 has 27 divisors (see below), whose sum is σ = 1755122243329. Its totient is φ = 522601206720.

The previous prime is 979892111017. The next prime is 979892111131. The reversal of 979892111025 is 520111298979.

It is a happy number.

The square root of 979892111025 is 989895.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 13076151201 + 966815959824 = 114351^2 + 983268^2 .

It is not a de Polignac number, because 979892111025 - 2³ = 979892111017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14815429 + ... + 14881421.

Almost surely, 2^979892111025 is an apocalyptic number.

979892111025 is the 989895-th square number.

979892111025 is the 494948-th centered octagonal number.

It is an amenable number.

979892111025 is a deficient number, since it is larger than the sum of its proper divisors (775230132304).

979892111025 is an frugal number, since it uses more digits than its factorization.

979892111025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132002 (or 66001 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 54.

The spelling of 979892111025 in words is "nine hundred seventy-nine billion, eight hundred ninety-two million, one hundred eleven thousand, twenty-five".