3156165725 has 6 divisors (see below), whose sum is σ = 3913645530. Its totient is φ = 2524932560.

The previous prime is 3156165721. The next prime is 3156165737. The reversal of 3156165725 is 5275616513.

It can be written as a sum of positive squares in 3 ways, for example, as 473236516 + 2682929209 = 21754^2 + 51797^2 .

It is not a de Polignac number, because 3156165725 - 2² = 3156165721 is a prime.

It is a super-2 number, since 2×3156165725² = 19922764167329551250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3156165721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63123290 + ... + 63123339.

It is an arithmetic number, because the mean of its divisors is an integer number (652274255).

Almost surely, 2^3156165725 is an apocalyptic number.

It is an amenable number.

3156165725 is a deficient number, since it is larger than the sum of its proper divisors (757479805).

3156165725 is a wasteful number, since it uses less digits than its factorization.

3156165725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126246639 (or 126246634 counting only the distinct ones).

The product of its digits is 189000, while the sum is 41.

The square root of 3156165725 is about 56179.7625929480. The cubic root of 3156165725 is about 1466.8530214023.

The spelling of 3156165725 in words is "three billion, one hundred fifty-six million, one hundred sixty-five thousand, seven hundred twenty-five".