12185 has 4 divisors (see below), whose sum is σ = 14628. Its totient is φ = 9744.

The previous prime is 12163. The next prime is 12197. The reversal of 12185 is 58121.

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 8464 + 3721 = 92^2 + 61^2 .

It is a cyclic number.

It is not a de Polignac number, because 12185 - 2¹⁰ = 11161 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 1214 + ... + 1223.

It is an arithmetic number, because the mean of its divisors is an integer number (3657).

2¹²¹⁸⁵ is an apocalyptic number.

It is an amenable number.

12185 is a deficient number, since it is larger than the sum of its proper divisors (2443).

12185 is an equidigital number, since it uses as much as digits as its factorization.

12185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442.

The product of its digits is 80, while the sum is 17.

The square root of 12185 is about 110.3856874780. The cubic root of 12185 is about 23.0113365664.

The spelling of 12185 in words is "twelve thousand, one hundred eighty-five".