12798125 has 10 divisors (see below), whose sum is σ = 15993318. Its totient is φ = 10238000.

The previous prime is 12798113. The next prime is 12798131. The reversal of 12798125 is 52189721.

It can be written as a sum of positive squares in 5 ways, for example, as 3200521 + 9597604 = 1789^2 + 3098^2 .

It is not a de Polignac number, because 12798125 - 2¹⁶ = 12732589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 9614 + ... + 10863.

Almost surely, 2^12798125 is an apocalyptic number.

It is an amenable number.

12798125 is a deficient number, since it is larger than the sum of its proper divisors (3195193).

12798125 is an frugal number, since it uses more digits than its factorization.

12798125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20497 (or 20482 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 12798125 is about 3577.4467151867. The cubic root of 12798125 is about 233.9099965550.

The spelling of 12798125 in words is "twelve million, seven hundred ninety-eight thousand, one hundred twenty-five".