165079969239025 has 27 divisors (see below), whose sum is σ = 217450029193219. Its totient is φ = 124294683956480.

The previous prime is 165079969239007. The next prime is 165079969239041. The reversal of 165079969239025 is 520932969970561.

The square root of 165079969239025 is 12848345.

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

It can be written as a sum of positive squares in 13 ways, for example, as 104670762342129 + 60409206896896 = 10230873^2 + 7772336^2 .

It is not a de Polignac number, because 165079969239025 - 2⁷ = 165079969238897 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, 1092033747 + ... + 1092184903.

Almost surely, 2^{165079969239025} is an apocalyptic number.

165079969239025 is the 12848345-th square number.

165079969239025 is the 6424173-rd centered octagonal number.

It is an amenable number.

165079969239025 is a deficient number, since it is larger than the sum of its proper divisors (52370059954194).

165079969239025 is an frugal number, since it uses more digits than its factorization.

165079969239025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302358 (or 151179 counting only the distinct ones).

The product of its (nonzero) digits is 496011600, while the sum is 73.

The spelling of 165079969239025 in words is "one hundred sixty-five trillion, seventy-nine billion, nine hundred sixty-nine million, two hundred thirty-nine thousand, twenty-five".