3125978624 has 40 divisors (see below), whose sum is σ = 6251553000. Its totient is φ = 1561563136.

The previous prime is 3125978623. The next prime is 3125978641. The reversal of 3125978624 is 4268795213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3125978623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765452 + ... + 769524.

It is an arithmetic number, because the mean of its divisors is an integer number (156288825).

Almost surely, 2^3125978624 is an apocalyptic number.

It is an amenable number.

3125978624 is a deficient number, since it is larger than the sum of its proper divisors (3125574376).

3125978624 is an equidigital number, since it uses as much as digits as its factorization.

3125978624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5590 (or 5574 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 3125978624 is about 55910.4518314778. The cubic root of 3125978624 is about 1462.1614672549.

The spelling of 3125978624 in words is "three billion, one hundred twenty-five million, nine hundred seventy-eight thousand, six hundred twenty-four".