318822225 has 12 divisors (see below), whose sum is σ = 527119536. Its totient is φ = 170038480.

The previous prime is 318822211. The next prime is 318822241. The reversal of 318822225 is 522228813.

It is not a de Polignac number, because 318822225 - 2¹⁶ = 318756689 is a prime.

It is a super-2 number, since 2×318822225² = 203295222307901250, which contains 22 as substring.

It is a Curzon number.

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, 2125407 + ... + 2125556.

It is an arithmetic number, because the mean of its divisors is an integer number (43926628).

Almost surely, 2^318822225 is an apocalyptic number.

It is an amenable number.

318822225 is a deficient number, since it is larger than the sum of its proper divisors (208297311).

318822225 is a wasteful number, since it uses less digits than its factorization.

318822225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250976 (or 4250971 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 318822225 is about 17855.5936613712. The cubic root of 318822225 is about 683.1501941630.

The spelling of 318822225 in words is "three hundred eighteen million, eight hundred twenty-two thousand, two hundred twenty-five".