15716625 has 16 divisors (see below), whose sum is σ = 26153088. Its totient is φ = 8382000.

The previous prime is 15716609. The next prime is 15716627. The reversal of 15716625 is 52661751.

It is not a de Polignac number, because 15716625 - 2⁴ = 15716609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15716627) 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 15 ways as a sum of consecutive naturals, for example, 20581 + ... + 21330.

It is an arithmetic number, because the mean of its divisors is an integer number (1634568).

Almost surely, 2^15716625 is an apocalyptic number.

15716625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15716625 is a deficient number, since it is larger than the sum of its proper divisors (10436463).

15716625 is an equidigital number, since it uses as much as digits as its factorization.

15716625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41929 (or 41919 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 15716625 is about 3964.4198818995. The cubic root of 15716625 is about 250.4877145859.

The spelling of 15716625 in words is "fifteen million, seven hundred sixteen thousand, six hundred twenty-five".