22722887252 has 12 divisors (see below), whose sum is σ = 42823902996. Its totient is φ = 10487486400.

The previous prime is 22722887249. The next prime is 22722887261. The reversal of 22722887252 is 25278822722.

It can be written as a sum of positive squares in 2 ways, for example, as 4955596816 + 17767290436 = 70396^2 + 133294^2 .

It is a super-2 number, since 2×22722887252² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22722887197 and 22722887206.

It is a congruent number.

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, 218489249 + ... + 218489352.

It is an arithmetic number, because the mean of its divisors is an integer number (3568658583).

Almost surely, 2^22722887252 is an apocalyptic number.

It is an amenable number.

22722887252 is a deficient number, since it is larger than the sum of its proper divisors (20101015744).

22722887252 is a wasteful number, since it uses less digits than its factorization.

22722887252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436978618 (or 436978616 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 47.

The spelling of 22722887252 in words is "twenty-two billion, seven hundred twenty-two million, eight hundred eighty-seven thousand, two hundred fifty-two".