12875785 has 16 divisors (see below), whose sum is σ = 16796304. Its totient is φ = 9418752.

The previous prime is 12875777. The next prime is 12875789. The reversal of 12875785 is 58757821.

It can be written as a sum of positive squares in 8 ways, for example, as 7907344 + 4968441 = 2812^2 + 2229^2 .

It is a cyclic number.

It is not a de Polignac number, because 12875785 - 2³ = 12875777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12875789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6469 + ... + 8221.

It is an arithmetic number, because the mean of its divisors is an integer number (1049769).

Almost surely, 2^12875785 is an apocalyptic number.

It is an amenable number.

12875785 is a deficient number, since it is larger than the sum of its proper divisors (3920519).

12875785 is a wasteful number, since it uses less digits than its factorization.

12875785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884.

The product of its digits is 156800, while the sum is 43.

The square root of 12875785 is about 3588.2844090178. The cubic root of 12875785 is about 234.3821706843.

The spelling of 12875785 in words is "twelve million, eight hundred seventy-five thousand, seven hundred eighty-five".