12425409 has 24 divisors (see below), whose sum is σ = 18610592. Its totient is φ = 7983360.

The previous prime is 12425393. The next prime is 12425417. The reversal of 12425409 is 90452421.

12425409 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12425409 - 2⁴ = 12425393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12425209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37374 + ... + 37704.

Almost surely, 2^12425409 is an apocalyptic number.

It is an amenable number.

12425409 is a deficient number, since it is larger than the sum of its proper divisors (6185183).

12425409 is a wasteful number, since it uses less digits than its factorization.

12425409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 12425409 is about 3524.9693615690. The cubic root of 12425409 is about 231.6168927337.

The spelling of 12425409 in words is "twelve million, four hundred twenty-five thousand, four hundred nine".