12925643 has 4 divisors (see below), whose sum is σ = 13605960. Its totient is φ = 12245328.

The previous prime is 12925637. The next prime is 12925663. The reversal of 12925643 is 34652921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12925643 - 2⁶ = 12925579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12925663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340130 + ... + 340167.

It is an arithmetic number, because the mean of its divisors is an integer number (3401490).

Almost surely, 2^12925643 is an apocalyptic number.

12925643 is a deficient number, since it is larger than the sum of its proper divisors (680317).

12925643 is an equidigital number, since it uses as much as digits as its factorization.

12925643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680316.

The product of its digits is 12960, while the sum is 32.

The square root of 12925643 is about 3595.2250277277. The cubic root of 12925643 is about 234.6843082557.

The spelling of 12925643 in words is "twelve million, nine hundred twenty-five thousand, six hundred forty-three".