22225440000 has 360 divisors, whose sum is σ = 77838708640. Its totient is φ = 5612544000.

The previous prime is 22225439969. The next prime is 22225440011. The reversal of 22225440000 is 4452222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9118782 + ... + 9121218.

Almost surely, 2^22225440000 is an apocalyptic number.

22225440000 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 22225440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38919354320).

22225440000 is an abundant number, since it is smaller than the sum of its proper divisors (55613268640).

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

22225440000 is an equidigital number, since it uses as much as digits as its factorization.

22225440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495 (or 2466 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

Adding to 22225440000 its reverse (4452222), we get a palindrome (22229892222).

The spelling of 22225440000 in words is "twenty-two billion, two hundred twenty-five million, four hundred forty thousand".