12555425 has 6 divisors (see below), whose sum is σ = 15568758. Its totient is φ = 10044320.

The previous prime is 12555397. The next prime is 12555443. The reversal of 12555425 is 52455521.

It can be written as a sum of positive squares in 3 ways, for example, as 2845969 + 9709456 = 1687^2 + 3116^2 .

It is not a de Polignac number, because 12555425 - 2²⁰ = 11506849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 251084 + ... + 251133.

It is an arithmetic number, because the mean of its divisors is an integer number (2594793).

Almost surely, 2^12555425 is an apocalyptic number.

It is an amenable number.

12555425 is a deficient number, since it is larger than the sum of its proper divisors (3013333).

12555425 is an equidigital number, since it uses as much as digits as its factorization.

12555425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502227 (or 502222 counting only the distinct ones).

The product of its digits is 10000, while the sum is 29.

The square root of 12555425 is about 3543.3635150800. The cubic root of 12555425 is about 232.4219493668.

The spelling of 12555425 in words is "twelve million, five hundred fifty-five thousand, four hundred twenty-five".