22501220250 has 192 divisors, whose sum is σ = 60750248832. Its totient is φ = 5543136000.

The previous prime is 22501220201. The next prime is 22501220257. The reversal of 22501220250 is 5202210522.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22501220257) 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, 11099737 + ... + 11101763.

It is an arithmetic number, because the mean of its divisors is an integer number (316407546).

Almost surely, 2^22501220250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22501220250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30375124416).

22501220250 is an abundant number, since it is smaller than the sum of its proper divisors (38249028582).

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

22501220250 is a wasteful number, since it uses less digits than its factorization.

22501220250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126 (or 2097 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

Adding to 22501220250 its reverse (5202210522), we get a palindrome (27703430772).

The spelling of 22501220250 in words is "twenty-two billion, five hundred one million, two hundred twenty thousand, two hundred fifty".