12378255 has 16 divisors (see below), whose sum is σ = 20666880. Its totient is φ = 6314528.

The previous prime is 12378251. The next prime is 12378263. The reversal of 12378255 is 55287321.

It is a cyclic number.

It is not a de Polignac number, because 12378255 - 2² = 12378251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12378251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17595 + ... + 18284.

It is an arithmetic number, because the mean of its divisors is an integer number (1291680).

Almost surely, 2^12378255 is an apocalyptic number.

12378255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12378255 is a deficient number, since it is larger than the sum of its proper divisors (8288625).

12378255 is a wasteful number, since it uses less digits than its factorization.

12378255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35910.

The product of its digits is 16800, while the sum is 33.

The square root of 12378255 is about 3518.2744350036. The cubic root of 12378255 is about 231.3235286027.

The spelling of 12378255 in words is "twelve million, three hundred seventy-eight thousand, two hundred fifty-five".