12871225 has 12 divisors (see below), whose sum is σ = 16155216. Its totient is φ = 10171280.

The previous prime is 12871207. The next prime is 12871241. The reversal of 12871225 is 52217821.

It is not a de Polignac number, because 12871225 - 2⁷ = 12871097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12871193 and 12871202.

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 11 ways as a sum of consecutive naturals, for example, 1027 + ... + 5176.

It is an arithmetic number, because the mean of its divisors is an integer number (1346268).

Almost surely, 2^12871225 is an apocalyptic number.

It is an amenable number.

12871225 is a deficient number, since it is larger than the sum of its proper divisors (3283991).

12871225 is an equidigital number, since it uses as much as digits as its factorization.

12871225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296 (or 6291 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

The square root of 12871225 is about 3587.6489516116. The cubic root of 12871225 is about 234.3544983548.

The spelling of 12871225 in words is "twelve million, eight hundred seventy-one thousand, two hundred twenty-five".