22205402250 has 64 divisors (see below), whose sum is σ = 56364197760. Its totient is φ = 5821065600.

The previous prime is 22205402237. The next prime is 22205402251. The reversal of 22205402250 is 5220450222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22205402250.

It is not an unprimeable number, because it can be changed into a prime (22205402251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206659 + ... + 295158.

It is an arithmetic number, because the mean of its divisors is an integer number (880690590).

Almost surely, 2^22205402250 is an apocalyptic number.

22205402250 is an abundant number, since it is smaller than the sum of its proper divisors (34158795510).

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

22205402250 is a wasteful number, since it uses less digits than its factorization.

22205402250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501896 (or 501886 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

Adding to 22205402250 its reverse (5220450222), we get a palindrome (27425852472).

The spelling of 22205402250 in words is "twenty-two billion, two hundred five million, four hundred two thousand, two hundred fifty".