12855725 has 6 divisors (see below), whose sum is σ = 15941130. Its totient is φ = 10284560.

The previous prime is 12855721. The next prime is 12855751. The reversal of 12855725 is 52755821.

It can be written as a sum of positive squares in 3 ways, for example, as 103684 + 12752041 = 322^2 + 3571^2 .

It is not a de Polignac number, because 12855725 - 2² = 12855721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12855721) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 257090 + ... + 257139.

It is an arithmetic number, because the mean of its divisors is an integer number (2656855).

Almost surely, 2^12855725 is an apocalyptic number.

It is an amenable number.

12855725 is a deficient number, since it is larger than the sum of its proper divisors (3085405).

12855725 is an equidigital number, since it uses as much as digits as its factorization.

12855725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514239 (or 514234 counting only the distinct ones).

The product of its digits is 28000, while the sum is 35.

The square root of 12855725 is about 3585.4881118196. The cubic root of 12855725 is about 234.2603878143.

The spelling of 12855725 in words is "twelve million, eight hundred fifty-five thousand, seven hundred twenty-five".