22505152 has 14 divisors (see below), whose sum is σ = 44658788. Its totient is φ = 11252544.

The previous prime is 22505149. The next prime is 22505159. The reversal of 22505152 is 25150522.

It is not an unprimeable number, because it can be changed into a prime (22505159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175758 + ... + 175885.

Almost surely, 2^22505152 is an apocalyptic number.

It is an amenable number.

22505152 is a deficient number, since it is larger than the sum of its proper divisors (22153636).

22505152 is an equidigital number, since it uses as much as digits as its factorization.

22505152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351655 (or 351645 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 22505152 is about 4743.9595276520. The cubic root of 22505152 is about 282.3323546537.

Adding to 22505152 its reverse (25150522), we get a palindrome (47655674).

The spelling of 22505152 in words is "twenty-two million, five hundred five thousand, one hundred fifty-two".