12725643 has 32 divisors (see below), whose sum is σ = 20160000. Its totient is φ = 7135968.

The previous prime is 12725627. The next prime is 12725653. The reversal of 12725643 is 34652721.

It is not a de Polignac number, because 12725643 - 2⁴ = 12725627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12725643.

It is not an unprimeable number, because it can be changed into a prime (12725653) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 85333 + ... + 85481.

It is an arithmetic number, because the mean of its divisors is an integer number (630000).

Almost surely, 2^12725643 is an apocalyptic number.

12725643 is a deficient number, since it is larger than the sum of its proper divisors (7434357).

12725643 is an equidigital number, since it uses as much as digits as its factorization.

12725643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 242 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 12725643 is about 3567.3019216209. The cubic root of 12725643 is about 233.4675783048.

The spelling of 12725643 in words is "twelve million, seven hundred twenty-five thousand, six hundred forty-three".