12648425 has 12 divisors (see below), whose sum is σ = 16607196. Its totient is φ = 9523200.

The previous prime is 12648421. The next prime is 12648431. The reversal of 12648425 is 52484621.

It can be written as a sum of positive squares in 6 ways, for example, as 426409 + 12222016 = 653^2 + 3496^2 .

It is not a de Polignac number, because 12648425 - 2² = 12648421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12648391 and 12648400.

It is not an unprimeable number, because it can be changed into a prime (12648421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14456 + ... + 15305.

It is an arithmetic number, because the mean of its divisors is an integer number (1383933).

Almost surely, 2^12648425 is an apocalyptic number.

It is an amenable number.

12648425 is a deficient number, since it is larger than the sum of its proper divisors (3958771).

12648425 is a wasteful number, since it uses less digits than its factorization.

12648425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29788 (or 29783 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The square root of 12648425 is about 3556.4624277504. The cubic root of 12648425 is about 232.9944002043.

The spelling of 12648425 in words is "twelve million, six hundred forty-eight thousand, four hundred twenty-five".