12655 has 4 divisors (see below), whose sum is σ = 15192. Its totient is φ = 10120.

The previous prime is 12653. The next prime is 12659. The reversal of 12655 is 55621.

It is a happy number.

12655 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12655 - 2¹ = 12653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1261 + ... + 1270.

It is an arithmetic number, because the mean of its divisors is an integer number (3798).

2¹²⁶⁵⁵ is an apocalyptic number.

12655 is a deficient number, since it is larger than the sum of its proper divisors (2537).

12655 is an equidigital number, since it uses as much as digits as its factorization.

12655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536.

The product of its digits is 300, while the sum is 19.

The square root of 12655 is about 112.4944443073. The cubic root of 12655 is about 23.3034765515.

It can be divided in two parts, 126 and 55, that added together give a palindrome (181).

The spelling of 12655 in words is "twelve thousand, six hundred fifty-five".