3125687812 has 48 divisors (see below), whose sum is σ = 6101125632. Its totient is φ = 1391967360.

The previous prime is 3125687753. The next prime is 3125687821. The reversal of 3125687812 is 2187865213.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164518 + ... + 182530.

It is an arithmetic number, because the mean of its divisors is an integer number (127106784).

Almost surely, 2^3125687812 is an apocalyptic number.

It is an amenable number.

3125687812 is a deficient number, since it is larger than the sum of its proper divisors (2975437820).

3125687812 is a wasteful number, since it uses less digits than its factorization.

3125687812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18148 (or 18146 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 3125687812 is about 55907.8510765706. The cubic root of 3125687812 is about 1462.1161238773.

The spelling of 3125687812 in words is "three billion, one hundred twenty-five million, six hundred eighty-seven thousand, eight hundred twelve".