22505133 has 16 divisors (see below), whose sum is σ = 34490880. Its totient is φ = 12786096.

The previous prime is 22505129. The next prime is 22505141. The reversal of 22505133 is 33150522.

It is not a de Polignac number, because 22505133 - 2² = 22505129 is a prime.

It is a super-2 number, since 2×22505133² = 1012962022695378, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22505113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 766 + ... + 6752.

It is an arithmetic number, because the mean of its divisors is an integer number (2155680).

Almost surely, 2^22505133 is an apocalyptic number.

It is an amenable number.

22505133 is a deficient number, since it is larger than the sum of its proper divisors (11985747).

22505133 is a wasteful number, since it uses less digits than its factorization.

22505133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6176.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 22505133 is about 4743.9575251050. The cubic root of 22505133 is about 282.3322752006.

Adding to 22505133 its reverse (33150522), we get a palindrome (55655655).

The spelling of 22505133 in words is "twenty-two million, five hundred five thousand, one hundred thirty-three".