12811825 has 24 divisors (see below), whose sum is σ = 17360000. Its totient is φ = 9322560.

The previous prime is 12811811. The next prime is 12811847. The reversal of 12811825 is 52811821.

It is not a de Polignac number, because 12811825 - 2⁷ = 12811697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12811793 and 12811802.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 25426 + ... + 25924.

Almost surely, 2^12811825 is an apocalyptic number.

It is an amenable number.

12811825 is a deficient number, since it is larger than the sum of its proper divisors (4548175).

12811825 is a wasteful number, since it uses less digits than its factorization.

12811825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601 (or 596 counting only the distinct ones).

The product of its digits is 1280, while the sum is 28.

The square root of 12811825 is about 3579.3609764873. The cubic root of 12811825 is about 233.9934312813.

The spelling of 12811825 in words is "twelve million, eight hundred eleven thousand, eight hundred twenty-five".