22985 has 4 divisors (see below), whose sum is σ = 27588. Its totient is φ = 18384.

The previous prime is 22973. The next prime is 22993. The reversal of 22985 is 58922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4489 + 18496 = 67^2 + 136^2 .

It is a cyclic number.

It is not a de Polignac number, because 22985 - 2⁶ = 22921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2294 + ... + 2303.

It is an arithmetic number, because the mean of its divisors is an integer number (6897).

2²²⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

22985 is a deficient number, since it is larger than the sum of its proper divisors (4603).

22985 is an equidigital number, since it uses as much as digits as its factorization.

22985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4602.

The product of its digits is 1440, while the sum is 26.

The square root of 22985 is about 151.6080472798. The cubic root of 22985 is about 28.4324861345.

Subtracting 22985 from its reverse (58922), we obtain a cube (35937 = 33³).

The spelling of 22985 in words is "twenty-two thousand, nine hundred eighty-five".