12808225 has 12 divisors (see below), whose sum is σ = 16817004. Its totient is φ = 9643520.

The previous prime is 12808219. The next prime is 12808241. The reversal of 12808225 is 52280821.

It can be written as a sum of positive squares in 6 ways, for example, as 746496 + 12061729 = 864^2 + 3473^2 .

It is not a de Polignac number, because 12808225 - 2⁵ = 12808193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12808193 and 12808202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14644 + ... + 15493.

It is an arithmetic number, because the mean of its divisors is an integer number (1401417).

Almost surely, 2^12808225 is an apocalyptic number.

It is an amenable number.

12808225 is a deficient number, since it is larger than the sum of its proper divisors (4008779).

12808225 is a wasteful number, since it uses less digits than its factorization.

12808225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30164 (or 30159 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 12808225 is about 3578.8580580962. The cubic root of 12808225 is about 233.9715125912.

The spelling of 12808225 in words is "twelve million, eight hundred eight thousand, two hundred twenty-five".