22505575 has 12 divisors (see below), whose sum is σ = 28014328. Its totient is φ = 17935200.

The previous prime is 22505551. The next prime is 22505579. The reversal of 22505575 is 57550522.

It is not a de Polignac number, because 22505575 - 2⁷ = 22505447 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22505579) by changing a digit.

It is a nontrivial repunit in base 282.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5485 + ... + 8665.

Almost surely, 2^22505575 is an apocalyptic number.

22505575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22505575 is a deficient number, since it is larger than the sum of its proper divisors (5508753).

22505575 is a wasteful number, since it uses less digits than its factorization.

22505575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3474 (or 3469 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 31.

The square root of 22505575 is about 4744.0041104535. The cubic root of 22505575 is about 282.3341235204.

The spelling of 22505575 in words is "twenty-two million, five hundred five thousand, five hundred seventy-five".