15930825 has 12 divisors (see below), whose sum is σ = 26339088. Its totient is φ = 8496400.

The previous prime is 15930809. The next prime is 15930829. The reversal of 15930825 is 52803951.

It is not a de Polignac number, because 15930825 - 2⁴ = 15930809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15930829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106131 + ... + 106280.

It is an arithmetic number, because the mean of its divisors is an integer number (2194924).

Almost surely, 2^15930825 is an apocalyptic number.

15930825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15930825 is a deficient number, since it is larger than the sum of its proper divisors (10408263).

15930825 is a wasteful number, since it uses less digits than its factorization.

15930825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212424 (or 212419 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 15930825 is about 3991.3437586858. The cubic root of 15930825 is about 251.6205393777.

The spelling of 15930825 in words is "fifteen million, nine hundred thirty thousand, eight hundred twenty-five".