22256459520 has 144 divisors (see below), whose sum is σ = 71183444640. Its totient is φ = 5926551552.

The previous prime is 22256459503. The next prime is 22256459527. The reversal of 22256459520 is 2595465222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22256459527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2949192 + ... + 2956728.

Almost surely, 2^22256459520 is an apocalyptic number.

22256459520 is a gapful number since it is divisible by the number (20) 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 22256459520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35591722320).

22256459520 is an abundant number, since it is smaller than the sum of its proper divisors (48926985120).

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

22256459520 is an equidigital number, since it uses as much as digits as its factorization.

22256459520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8330 (or 8316 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 22256459520 in words is "twenty-two billion, two hundred fifty-six million, four hundred fifty-nine thousand, five hundred twenty".