39572969397025 has 9 divisors (see below), whose sum is σ = 49070521054713. Its totient is φ = 31658350354800.

The previous prime is 39572969397011. The next prime is 39572969397061. The reversal of 39572969397025 is 52079396927593.

The square root of 39572969397025 is 6290705.

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 358521920289 + 39214447476736 = 598767^2 + 6262144^2 .

It is a de Polignac number, because none of the positive numbers 2^k-39572969397025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 30824455 + ... + 32082595.

Almost surely, 2^{39572969397025} is an apocalyptic number.

39572969397025 is the 6290705-th square number.

39572969397025 is the 3145353-rd centered octagonal number.

It is an amenable number.

39572969397025 is a deficient number, since it is larger than the sum of its proper divisors (9497551657688).

39572969397025 is an frugal number, since it uses more digits than its factorization.

39572969397025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516292 (or 1258146 counting only the distinct ones).

The product of its (nonzero) digits is 1736040600, while the sum is 76.

The spelling of 39572969397025 in words is "thirty-nine trillion, five hundred seventy-two billion, nine hundred sixty-nine million, three hundred ninety-seven thousand, twenty-five".