22525203456 has 1056 divisors, whose sum is σ = 88288911360. Its totient is φ = 5372116992.

The previous prime is 22525203451. The next prime is 22525203499. The reversal of 22525203456 is 65430252522.

22525203456 is a `hidden beast` number, since 2 + 2 + 52 + 520 + 34 + 56 = 666.

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 22525203456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22525203451) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 479259625 + ... + 479259671.

Almost surely, 2^22525203456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22525203456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44144455680).

22525203456 is an abundant number, since it is smaller than the sum of its proper divisors (65763707904).

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

22525203456 is a wasteful number, since it uses less digits than its factorization.

22525203456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 22525203456 its reverse (65430252522), we get a palindrome (87955455978).

The spelling of 22525203456 in words is "twenty-two billion, five hundred twenty-five million, two hundred three thousand, four hundred fifty-six".