3157909425 has 108 divisors (see below), whose sum is σ = 6259720012. Its totient is φ = 1520640000.

The previous prime is 3157909373. The next prime is 3157909429. The reversal of 3157909425 is 5249097513.

It is a happy number.

3157909425 is a `hidden beast` number, since 31 + 579 + 0 + 9 + 42 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 25492401 + 3132417024 = 5049^2 + 55968^2 .

It is not a de Polignac number, because 3157909425 - 2¹¹ = 3157907377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3157909429) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 5254125 + ... + 5254725.

Almost surely, 2^3157909425 is an apocalyptic number.

It is an amenable number.

3157909425 is a deficient number, since it is larger than the sum of its proper divisors (3101810587).

3157909425 is a wasteful number, since it uses less digits than its factorization.

3157909425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 3157909425 is about 56195.2793835924. The cubic root of 3157909425 is about 1467.1231044661.

The spelling of 3157909425 in words is "three billion, one hundred fifty-seven million, nine hundred nine thousand, four hundred twenty-five".