13539625 has 32 divisors (see below), whose sum is σ = 18944640. Its totient is φ = 9576000.

The previous prime is 13539623. The next prime is 13539637. The reversal of 13539625 is 52693531.

13539625 = 540² + 541² + ... + 582².

It is a happy number.

13539625 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 13539625 - 2¹ = 13539623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13539623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59011 + ... + 59239.

It is an arithmetic number, because the mean of its divisors is an integer number (592020).

Almost surely, 2^13539625 is an apocalyptic number.

It is an amenable number.

13539625 is a deficient number, since it is larger than the sum of its proper divisors (5405015).

13539625 is a wasteful number, since it uses less digits than its factorization.

13539625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 288 counting only the distinct ones).

The product of its digits is 24300, while the sum is 34.

The square root of 13539625 is about 3679.6229426396. The cubic root of 13539625 is about 238.3428960361.

The spelling of 13539625 in words is "thirteen million, five hundred thirty-nine thousand, six hundred twenty-five".