12425643 has 20 divisors (see below), whose sum is σ = 18687240. Its totient is φ = 8227872.

The previous prime is 12425641. The next prime is 12425663. The reversal of 12425643 is 34652421.

12425643 is a `hidden beast` number, since 12 + 4 + 2 + 5 + 643 = 666.

It is not a de Polignac number, because 12425643 - 2¹ = 12425641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12425641) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14071 + ... + 14927.

It is an arithmetic number, because the mean of its divisors is an integer number (934362).

Almost surely, 2^12425643 is an apocalyptic number.

12425643 is a deficient number, since it is larger than the sum of its proper divisors (6261597).

12425643 is an equidigital number, since it uses as much as digits as its factorization.

12425643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048 (or 1039 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 12425643 is about 3525.0025531906. The cubic root of 12425643 is about 231.6183466902.

The spelling of 12425643 in words is "twelve million, four hundred twenty-five thousand, six hundred forty-three".