3157878025 has 9 divisors (see below), whose sum is σ = 3916117191. Its totient is φ = 2526077640.

The previous prime is 3157878007. The next prime is 3157878043. The reversal of 3157878025 is 5208787513.

The square root of 3157878025 is 56195.

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

It is an interprime number because it is at equal distance from previous prime (3157878007) and next prime (3157878043).

It can be written as a sum of positive squares in only one way, i.e., 1136836089 + 2021041936 = 33717^2 + 44956^2 .

It is not a de Polignac number, because 3157878025 - 2²⁵ = 3124323593 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, 275356 + ... + 286594.

Almost surely, 2^3157878025 is an apocalyptic number.

3157878025 is the 56195-th square number.

3157878025 is the 28098-th centered octagonal number.

It is an amenable number.

3157878025 is a deficient number, since it is larger than the sum of its proper divisors (758239166).

3157878025 is an frugal number, since it uses more digits than its factorization.

3157878025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22488 (or 11244 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 46.

The cubic root of 3157878025 is about 1467.1182417746.

The spelling of 3157878025 in words is "three billion, one hundred fifty-seven million, eight hundred seventy-eight thousand, twenty-five".