12387425 has 12 divisors (see below), whose sum is σ = 15651900. Its totient is φ = 9721920.

The previous prime is 12387377. The next prime is 12387433. The reversal of 12387425 is 52478321.

12387425 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 388129 + 11999296 = 623^2 + 3464^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12387425 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12387391 and 12387400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3350 + ... + 5999.

It is an arithmetic number, because the mean of its divisors is an integer number (1304325).

Almost surely, 2^12387425 is an apocalyptic number.

It is an amenable number.

12387425 is a deficient number, since it is larger than the sum of its proper divisors (3264475).

12387425 is an equidigital number, since it uses as much as digits as its factorization.

12387425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9412 (or 9407 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 12387425 is about 3519.5773894034. The cubic root of 12387425 is about 231.3806371681.

The spelling of 12387425 in words is "twelve million, three hundred eighty-seven thousand, four hundred twenty-five".