22540430252 has 12 divisors (see below), whose sum is σ = 39615049656. Its totient is φ = 11221844640.

The previous prime is 22540430221. The next prime is 22540430273. The reversal of 22540430252 is 25203404522.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12091574 + ... + 12093437.

It is an arithmetic number, because the mean of its divisors is an integer number (3301254138).

Almost surely, 2^22540430252 is an apocalyptic number.

It is an amenable number.

22540430252 is a deficient number, since it is larger than the sum of its proper divisors (17074619404).

22540430252 is a wasteful number, since it uses less digits than its factorization.

22540430252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24185248 (or 24185246 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

Adding to 22540430252 its reverse (25203404522), we get a palindrome (47743834774).

The spelling of 22540430252 in words is "twenty-two billion, five hundred forty million, four hundred thirty thousand, two hundred fifty-two".