22044225240 has 144 divisors (see below), whose sum is σ = 74030533200. Its totient is φ = 5688743040.

The previous prime is 22044225223. The next prime is 22044225241. The reversal of 22044225240 is 4252244022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22044225241) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 314101 + ... + 377819.

It is an arithmetic number, because the mean of its divisors is an integer number (514100925).

Almost surely, 2^22044225240 is an apocalyptic number.

22044225240 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 22044225240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37015266600).

22044225240 is an abundant number, since it is smaller than the sum of its proper divisors (51986307960).

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

22044225240 is a wasteful number, since it uses less digits than its factorization.

22044225240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63798 (or 63760 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

Adding to 22044225240 its reverse (4252244022), we get a palindrome (26296469262).

The spelling of 22044225240 in words is "twenty-two billion, forty-four million, two hundred twenty-five thousand, two hundred forty".