225126621522 has 48 divisors (see below), whose sum is σ = 538528562208. Its totient is φ = 67398253440.

The previous prime is 225126621371. The next prime is 225126621539.

225126621522 is a `hidden beast` number, since 2 + 2 + 5 + 1 + 2 + 6 + 621 + 5 + 22 = 666.

225126621522 is nontrivially palindromic in base 10.

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, 6832983 + ... + 6865850.

It is an arithmetic number, because the mean of its divisors is an integer number (11219345046).

Almost surely, 2^225126621522 is an apocalyptic number.

225126621522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

225126621522 is an abundant number, since it is smaller than the sum of its proper divisors (313401940686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225126621522 is a wasteful number, since it uses less digits than its factorization.

225126621522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13698935 (or 13698932 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

It can be divided in two parts, 225126 and 621522, that added together give a palindrome (846648).

The spelling of 225126621522 in words is "two hundred twenty-five billion, one hundred twenty-six million, six hundred twenty-one thousand, five hundred twenty-two".