22505655 has 16 divisors (see below), whose sum is σ = 36689760. Its totient is φ = 11776128.

The previous prime is 22505627. The next prime is 22505663. The reversal of 22505655 is 55650522.

It is not a de Polignac number, because 22505655 - 2⁶ = 22505591 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13360 + ... + 14949.

It is an arithmetic number, because the mean of its divisors is an integer number (2293110).

Almost surely, 2^22505655 is an apocalyptic number.

22505655 is a deficient number, since it is larger than the sum of its proper divisors (14184105).

22505655 is a wasteful number, since it uses less digits than its factorization.

22505655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28370.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 22505655 is about 4744.0125421419. The cubic root of 22505655 is about 282.3344580553.

The spelling of 22505655 in words is "twenty-two million, five hundred five thousand, six hundred fifty-five".