15616972925 has 12 divisors (see below), whose sum is σ = 19391273760. Its totient is φ = 12476657520.

The previous prime is 15616972909. The next prime is 15616972927. The reversal of 15616972925 is 52927961651.

15616972925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15616972925 - 2⁴ = 15616972909 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15616972927) 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 11 ways as a sum of consecutive naturals, for example, 404177 + ... + 441126.

It is an arithmetic number, because the mean of its divisors is an integer number (1615939480).

Almost surely, 2^15616972925 is an apocalyptic number.

It is an amenable number.

15616972925 is a deficient number, since it is larger than the sum of its proper divisors (3774300835).

15616972925 is an equidigital number, since it uses as much as digits as its factorization.

15616972925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846052 (or 846047 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 53.

The spelling of 15616972925 in words is "fifteen billion, six hundred sixteen million, nine hundred seventy-two thousand, nine hundred twenty-five".