13525506 has 24 divisors (see below), whose sum is σ = 31029804. Its totient is φ = 4243200.

The previous prime is 13525493. The next prime is 13525529. The reversal of 13525506 is 60552531.

13525506 is a `hidden beast` number, since 135 + 25 + 506 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13505625 + 19881 = 3675^2 + 141^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13525506.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21795 + ... + 22406.

Almost surely, 2^13525506 is an apocalyptic number.

13525506 is an abundant number, since it is smaller than the sum of its proper divisors (17504298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13525506 is a wasteful number, since it uses less digits than its factorization.

13525506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44226 (or 44223 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 13525506 is about 3677.7039032527. The cubic root of 13525506 is about 238.2600199410.

The spelling of 13525506 in words is "thirteen million, five hundred twenty-five thousand, five hundred six".