12878425 has 18 divisors (see below), whose sum is σ = 18578238. Its totient is φ = 8830080.

The previous prime is 12878377. The next prime is 12878431. The reversal of 12878425 is 52487821.

It can be written as a sum of positive squares in 3 ways, for example, as 233289 + 12645136 = 483^2 + 3556^2 .

It is not a de Polignac number, because 12878425 - 2⁷ = 12878297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4032 + ... + 6481.

Almost surely, 2^12878425 is an apocalyptic number.

It is an amenable number.

12878425 is a deficient number, since it is larger than the sum of its proper divisors (5699813).

12878425 is a wasteful number, since it uses less digits than its factorization.

12878425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10537 (or 10525 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 12878425 is about 3588.6522539806. The cubic root of 12878425 is about 234.3981885205.

The spelling of 12878425 in words is "twelve million, eight hundred seventy-eight thousand, four hundred twenty-five".