3157125705 has 24 divisors (see below), whose sum is σ = 5710281408. Its totient is φ = 1610591136.

The previous prime is 3157125703. The next prime is 3157125733. The reversal of 3157125705 is 5075217513.

It is a happy number.

3157125705 is a `hidden beast` number, since 3 + 15 + 71 + 2 + 570 + 5 = 666.

It is not a de Polignac number, because 3157125705 - 2¹ = 3157125703 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3157125705.

It is not an unprimeable number, because it can be changed into a prime (3157125703) 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 23 ways as a sum of consecutive naturals, for example, 1524147 + ... + 1526216.

It is an arithmetic number, because the mean of its divisors is an integer number (237928392).

Almost surely, 2^3157125705 is an apocalyptic number.

It is an amenable number.

3157125705 is a deficient number, since it is larger than the sum of its proper divisors (2553155703).

3157125705 is a wasteful number, since it uses less digits than its factorization.

3157125705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050397 (or 3050394 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 36.

The square root of 3157125705 is about 56188.3057673036. The cubic root of 3157125705 is about 1467.0017257630.

The spelling of 3157125705 in words is "three billion, one hundred fifty-seven million, one hundred twenty-five thousand, seven hundred five".