225465564522 has 128 divisors (see below), whose sum is σ = 540245438208. Its totient is φ = 61945344000.

The previous prime is 225465564509. The next prime is 225465564581.

225465564522 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4166028 + ... + 4219800.

It is an arithmetic number, because the mean of its divisors is an integer number (4220667486).

Almost surely, 2^225465564522 is an apocalyptic number.

225465564522 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 225465564522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270122719104).

225465564522 is an abundant number, since it is smaller than the sum of its proper divisors (314779873686).

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

225465564522 is a wasteful number, since it uses less digits than its factorization.

225465564522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53944.

The product of its digits is 5760000, while the sum is 48.

It can be divided in two parts, 225465 and 564522, that added together give a palindrome (789987).

The spelling of 225465564522 in words is "two hundred twenty-five billion, four hundred sixty-five million, five hundred sixty-four thousand, five hundred twenty-two".