22531450422 has 16 divisors (see below), whose sum is σ = 48529278000. Its totient is φ = 6932753952.

The previous prime is 22531450387. The next prime is 22531450423. The reversal of 22531450422 is 22405413522.

It is a self number, because there is not a number n which added to its sum of digits gives 22531450422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22531450423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144432297 + ... + 144432452.

It is an arithmetic number, because the mean of its divisors is an integer number (3033079875).

Almost surely, 2^22531450422 is an apocalyptic number.

22531450422 is an abundant number, since it is smaller than the sum of its proper divisors (25997827578).

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

22531450422 is a wasteful number, since it uses less digits than its factorization.

22531450422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288864767.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 22531450422 its reverse (22405413522), we get a palindrome (44936863944).

The spelling of 22531450422 in words is "twenty-two billion, five hundred thirty-one million, four hundred fifty thousand, four hundred twenty-two".