12585855 has 16 divisors (see below), whose sum is σ = 20832480. Its totient is φ = 6480768.

The previous prime is 12585829. The next prime is 12585863. The reversal of 12585855 is 55858521.

12585855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12585855 - 2⁶ = 12585791 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, 14032 + ... + 14901.

It is an arithmetic number, because the mean of its divisors is an integer number (1302030).

Almost surely, 2^12585855 is an apocalyptic number.

12585855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12585855 is a deficient number, since it is larger than the sum of its proper divisors (8246625).

12585855 is a wasteful number, since it uses less digits than its factorization.

12585855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28970.

The product of its digits is 80000, while the sum is 39.

The square root of 12585855 is about 3547.6548591992. The cubic root of 12585855 is about 232.6095679661.

The spelling of 12585855 in words is "twelve million, five hundred eighty-five thousand, eight hundred fifty-five".