3125399922 has 18 divisors (see below), whose sum is σ = 6772213773. Its totient is φ = 1041720912.

The previous prime is 3125399909. The next prime is 3125399939. The reversal of 3125399922 is 2299935213.

3125399922 is a `hidden beast` number, since 3 + 1 + 2 + 539 + 99 + 22 = 666.

3125399922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3057979401 + 67420521 = 55299^2 + 8211^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=39531.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 230598 + ... + 243774.

Almost surely, 2^3125399922 is an apocalyptic number.

3125399922 is an abundant number, since it is smaller than the sum of its proper divisors (3646813851).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3125399922 is an frugal number, since it uses more digits than its factorization.

3125399922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26362 (or 13182 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 3125399922 is about 55905.2763341708. The cubic root of 3125399922 is about 1462.0712333273.

The spelling of 3125399922 in words is "three billion, one hundred twenty-five million, three hundred ninety-nine thousand, nine hundred twenty-two".