3125956642 has 16 divisors (see below), whose sum is σ = 4793758200. Its totient is φ = 1528239232.

The previous prime is 3125956619. The next prime is 3125956663. The reversal of 3125956642 is 2466595213.

It can be written as a sum of positive squares in 4 ways, for example, as 3069270801 + 56685841 = 55401^2 + 7529^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19267 + ... + 81382.

Almost surely, 2^3125956642 is an apocalyptic number.

3125956642 is a deficient number, since it is larger than the sum of its proper divisors (1667801558).

3125956642 is a wasteful number, since it uses less digits than its factorization.

3125956642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100997.

The product of its digits is 388800, while the sum is 43.

The square root of 3125956642 is about 55910.2552489255. The cubic root of 3125956642 is about 1462.1580399219.

The spelling of 3125956642 in words is "three billion, one hundred twenty-five million, nine hundred fifty-six thousand, six hundred forty-two".