225346643522 has 64 divisors (see below), whose sum is σ = 454011264000. Its totient is φ = 81014057280.

The previous prime is 225346643503. The next prime is 225346643527.

It is a happy number.

225346643522 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×225346643522² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225346643527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5864729 + ... + 5903027.

It is an arithmetic number, because the mean of its divisors is an integer number (7093926000).

Almost surely, 2^225346643522 is an apocalyptic number.

225346643522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

225346643522 is an abundant number, since it is smaller than the sum of its proper divisors (228664620478).

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

225346643522 is a wasteful number, since it uses less digits than its factorization.

225346643522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41271.

The product of its digits is 2073600, while the sum is 44.

It can be divided in two parts, 225346 and 643522, that added together give a palindrome (868868).

The spelling of 225346643522 in words is "two hundred twenty-five billion, three hundred forty-six million, six hundred forty-three thousand, five hundred twenty-two".