12870225 has 48 divisors (see below), whose sum is σ = 24700800. Its totient is φ = 6557760.

The previous prime is 12870217. The next prime is 12870227. The reversal of 12870225 is 52207821.

It is not a de Polignac number, because 12870225 - 2³ = 12870217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12870227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15111 + ... + 15939.

It is an arithmetic number, because the mean of its divisors is an integer number (514600).

Almost surely, 2^12870225 is an apocalyptic number.

12870225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12870225 is a deficient number, since it is larger than the sum of its proper divisors (11830575).

12870225 is a wasteful number, since it uses less digits than its factorization.

12870225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12870225 is about 3587.5095818687. The cubic root of 12870225 is about 234.3484289878.

The spelling of 12870225 in words is "twelve million, eight hundred seventy thousand, two hundred twenty-five".