12428425 has 6 divisors (see below), whose sum is σ = 15411278. Its totient is φ = 9942720.

The previous prime is 12428401. The next prime is 12428431. The reversal of 12428425 is 52482421.

12428425 is digitally balanced in base 2, 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 3 ways, for example, as 3825936 + 8602489 = 1956^2 + 2933^2 .

It is not a de Polignac number, because 12428425 - 2¹⁷ = 12297353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12428393 and 12428402.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 248544 + ... + 248593.

Almost surely, 2^12428425 is an apocalyptic number.

It is an amenable number.

12428425 is a deficient number, since it is larger than the sum of its proper divisors (2982853).

12428425 is an equidigital number, since it uses as much as digits as its factorization.

12428425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497147 (or 497142 counting only the distinct ones).

The product of its digits is 5120, while the sum is 28.

The square root of 12428425 is about 3525.3971407488. The cubic root of 12428425 is about 231.6356312191.

The spelling of 12428425 in words is "twelve million, four hundred twenty-eight thousand, four hundred twenty-five".