12455985 has 16 divisors (see below), whose sum is σ = 21102336. Its totient is φ = 6252288.

The previous prime is 12455983. The next prime is 12456011. The reversal of 12455985 is 58955421.

It is not a de Polignac number, because 12455985 - 2¹ = 12455983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12455981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24169 + ... + 24678.

It is an arithmetic number, because the mean of its divisors is an integer number (1318896).

Almost surely, 2^12455985 is an apocalyptic number.

12455985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12455985 is a deficient number, since it is larger than the sum of its proper divisors (8646351).

12455985 is a wasteful number, since it uses less digits than its factorization.

12455985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48872.

The product of its digits is 72000, while the sum is 39.

The square root of 12455985 is about 3529.3037557003. The cubic root of 12455985 is about 231.8067219528.

The spelling of 12455985 in words is "twelve million, four hundred fifty-five thousand, nine hundred eighty-five".