225665131722 has 16 divisors (see below), whose sum is σ = 459845929440. Its totient is φ = 73802432912.

The previous prime is 225665131709. The next prime is 225665131733. The reversal of 225665131722 is 227131566522.

It is a super-2 number, since 2×225665131722² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354819072 + ... + 354819707.

It is an arithmetic number, because the mean of its divisors is an integer number (28740370590).

Almost surely, 2^225665131722 is an apocalyptic number.

225665131722 is an abundant number, since it is smaller than the sum of its proper divisors (234180797718).

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

225665131722 is a wasteful number, since it uses less digits than its factorization.

225665131722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709638837.

The product of its digits is 302400, while the sum is 42.

The spelling of 225665131722 in words is "two hundred twenty-five billion, six hundred sixty-five million, one hundred thirty-one thousand, seven hundred twenty-two".