12585555 has 12 divisors (see below), whose sum is σ = 21815040. Its totient is φ = 6712272.

The previous prime is 12585553. The next prime is 12585557. The reversal of 12585555 is 55558521.

12585555 is a `hidden beast` number, since 1 + 25 + 85 + 555 = 666.

It is an interprime number because it is at equal distance from previous prime (12585553) and next prime (12585557).

It is not a de Polignac number, because 12585555 - 2¹ = 12585553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12585553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139795 + ... + 139884.

It is an arithmetic number, because the mean of its divisors is an integer number (1817920).

Almost surely, 2^12585555 is an apocalyptic number.

12585555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12585555 is a deficient number, since it is larger than the sum of its proper divisors (9229485).

12585555 is a wasteful number, since it uses less digits than its factorization.

12585555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279690 (or 279687 counting only the distinct ones).

The product of its digits is 50000, while the sum is 36.

The square root of 12585555 is about 3547.6125774949. The cubic root of 12585555 is about 232.6077197689.

The spelling of 12585555 in words is "twelve million, five hundred eighty-five thousand, five hundred fifty-five".