22505105 has 16 divisors (see below), whose sum is σ = 31618944. Its totient is φ = 15054720.

The previous prime is 22505089. The next prime is 22505111. The reversal of 22505105 is 50150522.

It is not a de Polignac number, because 22505105 - 2⁴ = 22505089 is a prime.

It is a super-2 number, since 2×22505105² = 1012959502122050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6407 + ... + 9276.

It is an arithmetic number, because the mean of its divisors is an integer number (1976184).

Almost surely, 2^22505105 is an apocalyptic number.

It is an amenable number.

22505105 is a deficient number, since it is larger than the sum of its proper divisors (9113839).

22505105 is a wasteful number, since it uses less digits than its factorization.

22505105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15736.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 22505105 is about 4743.9545739815. The cubic root of 22505105 is about 282.3321581116.

Adding to 22505105 its reverse (50150522), we get a palindrome (72655627).

The spelling of 22505105 in words is "twenty-two million, five hundred five thousand, one hundred five".