22512514232440 has 64 divisors (see below), whose sum is σ = 52706938412160. Its totient is φ = 8647119037440.

The previous prime is 22512514232423. The next prime is 22512514232449. The reversal of 22512514232440 is 4423241521522.

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 22512514232440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22512514232449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112869621 + ... + 113068900.

It is an arithmetic number, because the mean of its divisors is an integer number (823545912690).

Almost surely, 2^{22512514232440} is an apocalyptic number.

22512514232440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22512514232440 is an abundant number, since it is smaller than the sum of its proper divisors (30194424179720).

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

22512514232440 is a wasteful number, since it uses less digits than its factorization.

22512514232440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225938632 (or 225938628 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 22512514232440 its reverse (4423241521522), we get a palindrome (26935755753962).

The spelling of 22512514232440 in words is "twenty-two trillion, five hundred twelve billion, five hundred fourteen million, two hundred thirty-two thousand, four hundred forty".