12725818 has 16 divisors (see below), whose sum is σ = 22042944. Its totient is φ = 5397120.

The previous prime is 12725813. The next prime is 12725819. The reversal of 12725818 is 81852721.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12725813) 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 7 ways as a sum of consecutive naturals, for example, 3328 + ... + 6043.

It is an arithmetic number, because the mean of its divisors is an integer number (1377684).

Almost surely, 2^12725818 is an apocalyptic number.

12725818 is a deficient number, since it is larger than the sum of its proper divisors (9317126).

12725818 is an equidigital number, since it uses as much as digits as its factorization.

12725818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9477.

The product of its digits is 8960, while the sum is 34.

The square root of 12725818 is about 3567.3264498781. The cubic root of 12725818 is about 233.4686484967.

The spelling of 12725818 in words is "twelve million, seven hundred twenty-five thousand, eight hundred eighteen".