12564425 has 12 divisors (see below), whose sum is σ = 15689100. Its totient is φ = 9981120.

The previous prime is 12564421. The next prime is 12564427. The reversal of 12564425 is 52446521.

12564425 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 4489 + 12559936 = 67^2 + 3544^2 .

It is not a de Polignac number, because 12564425 - 2² = 12564421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12564421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2039 + ... + 5411.

It is an arithmetic number, because the mean of its divisors is an integer number (1307425).

Almost surely, 2^12564425 is an apocalyptic number.

It is an amenable number.

12564425 is a deficient number, since it is larger than the sum of its proper divisors (3124675).

12564425 is a wasteful number, since it uses less digits than its factorization.

12564425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532 (or 3527 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 12564425 is about 3544.6332673494. The cubic root of 12564425 is about 232.4774711280.

The spelling of 12564425 in words is "twelve million, five hundred sixty-four thousand, four hundred twenty-five".