12451985 has 16 divisors (see below), whose sum is σ = 18391296. Its totient is φ = 7881408.

The previous prime is 12451963. The next prime is 12451997. The reversal of 12451985 is 58915421.

It is a cyclic number.

It is not a de Polignac number, because 12451985 - 2⁶ = 12451921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13229 + ... + 14138.

It is an arithmetic number, because the mean of its divisors is an integer number (1149456).

Almost surely, 2^12451985 is an apocalyptic number.

It is an amenable number.

12451985 is a deficient number, since it is larger than the sum of its proper divisors (5939311).

12451985 is a wasteful number, since it uses less digits than its factorization.

12451985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27392.

The product of its digits is 14400, while the sum is 35.

The square root of 12451985 is about 3528.7370261894. The cubic root of 12451985 is about 231.7819058728.

The spelling of 12451985 in words is "twelve million, four hundred fifty-one thousand, nine hundred eighty-five".