12805025 has 12 divisors (see below), whose sum is σ = 15948012. Its totient is φ = 10199040.

The previous prime is 12805007. The next prime is 12805027. The reversal of 12805025 is 52050821.

It can be written as a sum of positive squares in 6 ways, for example, as 1183744 + 11621281 = 1088^2 + 3409^2 .

It is not a de Polignac number, because 12805025 - 2⁸ = 12804769 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12805027) 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 11 ways as a sum of consecutive naturals, for example, 5429 + ... + 7421.

It is an arithmetic number, because the mean of its divisors is an integer number (1329001).

Almost surely, 2^12805025 is an apocalyptic number.

It is an amenable number.

12805025 is a deficient number, since it is larger than the sum of its proper divisors (3142987).

12805025 is a wasteful number, since it uses less digits than its factorization.

12805025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260 (or 2255 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 12805025 is about 3578.4109601889. The cubic root of 12805025 is about 233.9520258629.

Adding to 12805025 its reverse (52050821), we get a palindrome (64855846).

The spelling of 12805025 in words is "twelve million, eight hundred five thousand, twenty-five".