16320825 has 24 divisors (see below), whose sum is σ = 29983200. Its totient is φ = 8704080.

The previous prime is 16320809. The next prime is 16320919. The reversal of 16320825 is 52802361.

16320825 is a `hidden beast` number, since 1 + 632 + 0 + 8 + 25 = 666.

16320825 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16320825 - 2⁴ = 16320809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11415 + ... + 12764.

It is an arithmetic number, because the mean of its divisors is an integer number (1249300).

Almost surely, 2^16320825 is an apocalyptic number.

16320825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16320825 is a deficient number, since it is larger than the sum of its proper divisors (13662375).

16320825 is a wasteful number, since it uses less digits than its factorization.

16320825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24198 (or 24187 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 16320825 is about 4039.9040830198. The cubic root of 16320825 is about 253.6573023212.

The spelling of 16320825 in words is "sixteen million, three hundred twenty thousand, eight hundred twenty-five".