22505233 has 8 divisors (see below), whose sum is σ = 22947552. Its totient is φ = 22066176.

The previous prime is 22505207. The next prime is 22505239. The reversal of 22505233 is 33250522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22505233 - 2²¹ = 20408081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22505239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16566 + ... + 17872.

It is an arithmetic number, because the mean of its divisors is an integer number (2868444).

Almost surely, 2^22505233 is an apocalyptic number.

It is an amenable number.

22505233 is a deficient number, since it is larger than the sum of its proper divisors (442319).

22505233 is a wasteful number, since it uses less digits than its factorization.

22505233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 22505233 is about 4743.9680648166. The cubic root of 22505233 is about 282.3326933746.

Adding to 22505233 its reverse (33250522), we get a palindrome (55755755).

The spelling of 22505233 in words is "twenty-two million, five hundred five thousand, two hundred thirty-three".