225922386818 has 18 divisors (see below), whose sum is σ = 346295705763. Its totient is φ = 110542303300.

The previous prime is 225922386769. The next prime is 225922386821. The reversal of 225922386818 is 818683229522.

It can be written as a sum of positive squares in only one way, i.e., 112961193409 + 112961193409 = 336097^2 + 336097^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=336097.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 31589543 + ... + 31596693.

Almost surely, 2^225922386818 is an apocalyptic number.

225922386818 is a deficient number, since it is larger than the sum of its proper divisors (120373318945).

225922386818 is an frugal number, since it uses more digits than its factorization.

225922386818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14398 (or 7200 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 56.

The spelling of 225922386818 in words is "two hundred twenty-five billion, nine hundred twenty-two million, three hundred eighty-six thousand, eight hundred eighteen".