818413225 has 24 divisors (see below), whose sum is σ = 1164155648. Its totient is φ = 559094400.

The previous prime is 818413217. The next prime is 818413231. The reversal of 818413225 is 522314818.

It is a happy number.

It is not a de Polignac number, because 818413225 - 2³ = 818413217 is a prime.

It is a Duffinian number.

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, 38797 + ... + 56053.

Almost surely, 2^818413225 is an apocalyptic number.

It is an amenable number.

818413225 is a deficient number, since it is larger than the sum of its proper divisors (345742423).

818413225 is a wasteful number, since it uses less digits than its factorization.

818413225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17545 (or 17540 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 818413225 is about 28607.9224167013. The cubic root of 818413225 is about 935.3860302718.

The spelling of 818413225 in words is "eight hundred eighteen million, four hundred thirteen thousand, two hundred twenty-five".