13552225 has 24 divisors (see below), whose sum is σ = 17925440. Its totient is φ = 10134720.

The previous prime is 13552211. The next prime is 13552237. The reversal of 13552225 is 52225531.

It is a happy number.

13552225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-13552225 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 13552225.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48787 + ... + 49063.

Almost surely, 2^13552225 is an apocalyptic number.

It is an amenable number.

13552225 is a deficient number, since it is larger than the sum of its proper divisors (4373215).

13552225 is a wasteful number, since it uses less digits than its factorization.

13552225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 404 counting only the distinct ones).

The product of its digits is 3000, while the sum is 25.

The square root of 13552225 is about 3681.3346764455. The cubic root of 13552225 is about 238.4168072265.

Adding to 13552225 its reverse (52225531), we get a palindrome (65777756).

The spelling of 13552225 in words is "thirteen million, five hundred fifty-two thousand, two hundred twenty-five".