13639625 has 16 divisors (see below), whose sum is σ = 17921280. Its totient is φ = 10335600.

The previous prime is 13639553. The next prime is 13639631. The reversal of 13639625 is 52693631.

13639625 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 13639625 - 2¹² = 13635529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497 + ... + 5246.

It is an arithmetic number, because the mean of its divisors is an integer number (1120080).

Almost surely, 2^13639625 is an apocalyptic number.

It is an amenable number.

13639625 is a deficient number, since it is larger than the sum of its proper divisors (4281655).

13639625 is an equidigital number, since it uses as much as digits as its factorization.

13639625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5777 (or 5767 counting only the distinct ones).

The product of its digits is 29160, while the sum is 35.

The square root of 13639625 is about 3693.1862937036. The cubic root of 13639625 is about 238.9282360123.

The spelling of 13639625 in words is "thirteen million, six hundred thirty-nine thousand, six hundred twenty-five".