22257451008 has 360 divisors, whose sum is σ = 73423769328. Its totient is φ = 6436159488.

The previous prime is 22257451001. The next prime is 22257451037. The reversal of 22257451008 is 80015475222.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22257451001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32587435 + ... + 32588117.

Almost surely, 2^22257451008 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 22257451008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36711884664).

22257451008 is an abundant number, since it is smaller than the sum of its proper divisors (51166318320).

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

22257451008 is a wasteful number, since it uses less digits than its factorization.

22257451008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The spelling of 22257451008 in words is "twenty-two billion, two hundred fifty-seven million, four hundred fifty-one thousand, eight".