13553525 has 6 divisors (see below), whose sum is σ = 16806402. Its totient is φ = 10842800.

The previous prime is 13553513. The next prime is 13553537. The reversal of 13553525 is 52535531.

It is an interprime number because it is at equal distance from previous prime (13553513) and next prime (13553537).

It can be written as a sum of positive squares in 3 ways, for example, as 77284 + 13476241 = 278^2 + 3671^2 .

It is not a de Polignac number, because 13553525 - 2⁸ = 13553269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 271046 + ... + 271095.

It is an arithmetic number, because the mean of its divisors is an integer number (2801067).

Almost surely, 2^13553525 is an apocalyptic number.

It is an amenable number.

13553525 is a deficient number, since it is larger than the sum of its proper divisors (3252877).

13553525 is an equidigital number, since it uses as much as digits as its factorization.

13553525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542151 (or 542146 counting only the distinct ones).

The product of its digits is 11250, while the sum is 29.

The square root of 13553525 is about 3681.5112386084. The cubic root of 13553525 is about 238.4244303767.

The spelling of 13553525 in words is "thirteen million, five hundred fifty-three thousand, five hundred twenty-five".