225621126522 has 48 divisors (see below), whose sum is σ = 538463884608. Its totient is φ = 67706245440.

The previous prime is 225621126503. The next prime is 225621126553.

225621126522 is a `hidden beast` number, since 2 + 2 + 5 + 6 + 2 + 1 + 126 + 522 = 666.

225621126522 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, 5511163 + ... + 5551950.

It is an arithmetic number, because the mean of its divisors is an integer number (11217997596).

Almost surely, 2^225621126522 is an apocalyptic number.

225621126522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

225621126522 is an abundant number, since it is smaller than the sum of its proper divisors (312842758086).

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

225621126522 is a wasteful number, since it uses less digits than its factorization.

225621126522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11063235 (or 11063232 counting only the distinct ones).

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

The spelling of 225621126522 in words is "two hundred twenty-five billion, six hundred twenty-one million, one hundred twenty-six thousand, five hundred twenty-two".