225135531522 has 24 divisors (see below), whose sum is σ = 532138529520. Its totient is φ = 68222888280.

The previous prime is 225135531499. The next prime is 225135531541.

225135531522 is a `hidden beast` number, since 2 + 2 + 51 + 3 + 55 + 31 + 522 = 666.

225135531522 is nontrivially palindromic in base 10.

225135531522 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 568523872 + ... + 568524267.

It is an arithmetic number, because the mean of its divisors is an integer number (22172438730).

Almost surely, 2^225135531522 is an apocalyptic number.

225135531522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

225135531522 is an abundant number, since it is smaller than the sum of its proper divisors (307002997998).

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

225135531522 is a wasteful number, since it uses less digits than its factorization.

225135531522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137048158 (or 1137048155 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

It can be divided in two parts, 225135 and 531522, that added together give a palindrome (756657).

The spelling of 225135531522 in words is "two hundred twenty-five billion, one hundred thirty-five million, five hundred thirty-one thousand, five hundred twenty-two".