12919225 has 24 divisors (see below), whose sum is σ = 17677440. Its totient is φ = 9288000.

The previous prime is 12919211. The next prime is 12919241. The reversal of 12919225 is 52291921.

It is not a de Polignac number, because 12919225 - 2⁷ = 12919097 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 29760 + ... + 30190.

It is an arithmetic number, because the mean of its divisors is an integer number (736560).

Almost surely, 2^12919225 is an apocalyptic number.

It is an amenable number.

12919225 is a deficient number, since it is larger than the sum of its proper divisors (4758215).

12919225 is a wasteful number, since it uses less digits than its factorization.

12919225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 556 counting only the distinct ones).

The product of its digits is 3240, while the sum is 31.

The square root of 12919225 is about 3594.3323441218. The cubic root of 12919225 is about 234.6454590407.

The spelling of 12919225 in words is "twelve million, nine hundred nineteen thousand, two hundred twenty-five".