22265213256 has 576 divisors, whose sum is σ = 75825771840. Its totient is φ = 6065280000.

The previous prime is 22265213219. The next prime is 22265213287. The reversal of 22265213256 is 65231256222.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22265213256.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 220447606 + ... + 220447706.

It is an arithmetic number, because the mean of its divisors is an integer number (131641965).

Almost surely, 2^22265213256 is an apocalyptic number.

22265213256 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22265213256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37912885920).

22265213256 is an abundant number, since it is smaller than the sum of its proper divisors (53560558584).

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

22265213256 is a wasteful number, since it uses less digits than its factorization.

22265213256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 191 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

Adding to 22265213256 its reverse (65231256222), we get a palindrome (87496469478).

The spelling of 22265213256 in words is "twenty-two billion, two hundred sixty-five million, two hundred thirteen thousand, two hundred fifty-six".