12791225 has 12 divisors (see below), whose sum is σ = 16794684. Its totient is φ = 9630720.

The previous prime is 12791201. The next prime is 12791227. The reversal of 12791225 is 52219721.

It can be written as a sum of positive squares in 6 ways, for example, as 1373584 + 11417641 = 1172^2 + 3379^2 .

It is not a de Polignac number, because 12791225 - 2¹⁴ = 12774841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12791227) 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 11 ways as a sum of consecutive naturals, for example, 14624 + ... + 15473.

It is an arithmetic number, because the mean of its divisors is an integer number (1399557).

Almost surely, 2^12791225 is an apocalyptic number.

It is an amenable number.

12791225 is a deficient number, since it is larger than the sum of its proper divisors (4003459).

12791225 is a wasteful number, since it uses less digits than its factorization.

12791225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30124 (or 30119 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 12791225 is about 3576.4822102172. The cubic root of 12791225 is about 233.8679521379.

The spelling of 12791225 in words is "twelve million, seven hundred ninety-one thousand, two hundred twenty-five".