3157647025 has 24 divisors (see below), whose sum is σ = 4222464120. Its totient is φ = 2328599040.

The previous prime is 3157646983. The next prime is 3157647029. The reversal of 3157647025 is 5207467513.

It can be written as a sum of positive squares in 12 ways, for example, as 1147380129 + 2010266896 = 33873^2 + 44836^2 .

It is not a de Polignac number, because 3157647025 - 2²⁵ = 3124092593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3157647029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 244941 + ... + 257509.

It is an arithmetic number, because the mean of its divisors is an integer number (175936005).

Almost surely, 2^3157647025 is an apocalyptic number.

It is an amenable number.

3157647025 is a deficient number, since it is larger than the sum of its proper divisors (1064817095).

3157647025 is a wasteful number, since it uses less digits than its factorization.

3157647025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13365 (or 13360 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 3157647025 is about 56192.9446194093. The cubic root of 3157647025 is about 1467.0824674799.

The spelling of 3157647025 in words is "three billion, one hundred fifty-seven million, six hundred forty-seven thousand, twenty-five".