11985255 has 24 divisors (see below), whose sum is σ = 21997872. Its totient is φ = 6015744.

The previous prime is 11985247. The next prime is 11985263. The reversal of 11985255 is 55258911.

It is a happy number.

11985255 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11985247) and next prime (11985263).

It is not a de Polignac number, because 11985255 - 2³ = 11985247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7069 + ... + 8598.

It is an arithmetic number, because the mean of its divisors is an integer number (916578).

Almost surely, 2^11985255 is an apocalyptic number.

11985255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11985255 is a deficient number, since it is larger than the sum of its proper divisors (10012617).

11985255 is a wasteful number, since it uses less digits than its factorization.

11985255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15695 (or 15692 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The square root of 11985255 is about 3461.9727035319. The cubic root of 11985255 is about 228.8490389023.

The spelling of 11985255 in words is "eleven million, nine hundred eighty-five thousand, two hundred fifty-five".