22515245120 has 112 divisors (see below), whose sum is σ = 55118953008. Its totient is φ = 8754954240.

The previous prime is 22515245107. The next prime is 22515245131. The reversal of 22515245120 is 2154251522.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 866242624 + 21649002496 = 29432^2 + 147136^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3841232 + ... + 3847088.

It is an arithmetic number, because the mean of its divisors is an integer number (492133509).

Almost surely, 2^22515245120 is an apocalyptic number.

22515245120 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 22515245120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27559476504).

22515245120 is an abundant number, since it is smaller than the sum of its proper divisors (32603707888).

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

22515245120 is a wasteful number, since it uses less digits than its factorization.

22515245120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6208 (or 6198 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 22515245120 its reverse (2154251522), we get a palindrome (24669496642).

The spelling of 22515245120 in words is "twenty-two billion, five hundred fifteen million, two hundred forty-five thousand, one hundred twenty".