12428825 has 6 divisors (see below), whose sum is σ = 15411774. Its totient is φ = 9943040.

The previous prime is 12428813. The next prime is 12428827. The reversal of 12428825 is 52882421.

It can be written as a sum of positive squares in 3 ways, for example, as 59536 + 12369289 = 244^2 + 3517^2 .

It is not a de Polignac number, because 12428825 - 2⁸ = 12428569 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12428791 and 12428800.

It is not an unprimeable number, because it can be changed into a prime (12428827) 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 5 ways as a sum of consecutive naturals, for example, 248552 + ... + 248601.

It is an arithmetic number, because the mean of its divisors is an integer number (2568629).

Almost surely, 2^12428825 is an apocalyptic number.

It is an amenable number.

12428825 is a deficient number, since it is larger than the sum of its proper divisors (2982949).

12428825 is an equidigital number, since it uses as much as digits as its factorization.

12428825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497163 (or 497158 counting only the distinct ones).

The product of its digits is 10240, while the sum is 32.

The square root of 12428825 is about 3525.4538714895. The cubic root of 12428825 is about 231.6381162017.

The spelling of 12428825 in words is "twelve million, four hundred twenty-eight thousand, eight hundred twenty-five".