15648625 has 16 divisors (see below), whose sum is σ = 20382336. Its totient is φ = 11972400.

The previous prime is 15648623. The next prime is 15648631. The reversal of 15648625 is 52684651.

It is not a de Polignac number, because 15648625 - 2¹ = 15648623 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (15648623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154 + ... + 5596.

It is an arithmetic number, because the mean of its divisors is an integer number (1273896).

Almost surely, 2^15648625 is an apocalyptic number.

It is an amenable number.

15648625 is a deficient number, since it is larger than the sum of its proper divisors (4733711).

15648625 is an equidigital number, since it uses as much as digits as its factorization.

15648625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481 (or 5471 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 15648625 is about 3955.8342988553. The cubic root of 15648625 is about 250.1259365493.

The spelling of 15648625 in words is "fifteen million, six hundred forty-eight thousand, six hundred twenty-five".