12255945 has 16 divisors (see below), whose sum is σ = 21118272. Its totient is φ = 6033600.

The previous prime is 12255911. The next prime is 12255953. The reversal of 12255945 is 54955221.

It is not a de Polignac number, because 12255945 - 2¹⁴ = 12239561 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31231 + ... + 31620.

It is an arithmetic number, because the mean of its divisors is an integer number (1319892).

Almost surely, 2^12255945 is an apocalyptic number.

12255945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12255945 is a deficient number, since it is larger than the sum of its proper divisors (8862327).

12255945 is a wasteful number, since it uses less digits than its factorization.

12255945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62872.

The product of its digits is 18000, while the sum is 33.

The square root of 12255945 is about 3500.8491826984. The cubic root of 12255945 is about 230.5590997880.

It can be divided in two parts, 122559 and 45, that multiplied together give a palindrome (5515155).

The spelling of 12255945 in words is "twelve million, two hundred fifty-five thousand, nine hundred forty-five".