22520025000 has 576 divisors, whose sum is σ = 86501338560. Its totient is φ = 5443200000.

The previous prime is 22520024963. The next prime is 22520025007. The reversal of 22520025000 is 52002522.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22520025007) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 66824832 + ... + 66825168.

It is an arithmetic number, because the mean of its divisors is an integer number (150175935).

Almost surely, 2^22520025000 is an apocalyptic number.

22520025000 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 22520025000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43250669280).

22520025000 is an abundant number, since it is smaller than the sum of its proper divisors (63981313560).

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

22520025000 is an equidigital number, since it uses as much as digits as its factorization.

22520025000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

Adding to 22520025000 its reverse (52002522), we get a palindrome (22572027522).

The spelling of 22520025000 in words is "twenty-two billion, five hundred twenty million, twenty-five thousand".