225447744522 has 256 divisors, whose sum is σ = 625637376000. Its totient is φ = 53363681280.

The previous prime is 225447744451. The next prime is 225447744523.

225447744522 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (225447744523) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 23244378 + ... + 23254074.

It is an arithmetic number, because the mean of its divisors is an integer number (2443896000).

Almost surely, 2^225447744522 is an apocalyptic number.

225447744522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 225447744522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312818688000).

225447744522 is an abundant number, since it is smaller than the sum of its proper divisors (400189631478).

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

225447744522 is a wasteful number, since it uses less digits than its factorization.

225447744522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9826 (or 9812 counting only the distinct ones).

The product of its digits is 5017600, while the sum is 48.

It can be divided in two parts, 225447 and 744522, that added together give a palindrome (969969).

The spelling of 225447744522 in words is "two hundred twenty-five billion, four hundred forty-seven million, seven hundred forty-four thousand, five hundred twenty-two".