22250512 has 20 divisors (see below), whose sum is σ = 43209040. Its totient is φ = 11099808.

The previous prime is 22250509. The next prime is 22250521. The reversal of 22250512 is 21505222.

It is a self number, because there is not a number n which added to its sum of digits gives 22250512.

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, 7039 + ... + 9697.

It is an arithmetic number, because the mean of its divisors is an integer number (2160452).

Almost surely, 2^22250512 is an apocalyptic number.

It is an amenable number.

22250512 is a deficient number, since it is larger than the sum of its proper divisors (20958528).

22250512 is a wasteful number, since it uses less digits than its factorization.

22250512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190 (or 3184 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 22250512 is about 4717.0448376075. The cubic root of 22250512 is about 281.2634737907.

Adding to 22250512 its reverse (21505222), we get a palindrome (43755734).

The spelling of 22250512 in words is "twenty-two million, two hundred fifty thousand, five hundred twelve".