13855225 has 6 divisors (see below), whose sum is σ = 17180510. Its totient is φ = 11084160.

The previous prime is 13855211. The next prime is 13855249. The reversal of 13855225 is 52255831.

It can be written as a sum of positive squares in 3 ways, for example, as 685584 + 13169641 = 828^2 + 3629^2 .

It is not a de Polignac number, because 13855225 - 2⁷ = 13855097 is a prime.

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, 277080 + ... + 277129.

Almost surely, 2^13855225 is an apocalyptic number.

It is an amenable number.

13855225 is a deficient number, since it is larger than the sum of its proper divisors (3325285).

13855225 is an equidigital number, since it uses as much as digits as its factorization.

13855225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554219 (or 554214 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 13855225 is about 3722.2607377775. The cubic root of 13855225 is about 240.1805643496.

The spelling of 13855225 in words is "thirteen million, eight hundred fifty-five thousand, two hundred twenty-five".