12406425 has 24 divisors (see below), whose sum is σ = 20769504. Its totient is φ = 6533760.

The previous prime is 12406421. The next prime is 12406441. The reversal of 12406425 is 52460421.

It is not a de Polignac number, because 12406425 - 2² = 12406421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12406395 and 12406404.

It is not an unprimeable number, because it can be changed into a prime (12406421) 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, 5229 + ... + 7221.

It is an arithmetic number, because the mean of its divisors is an integer number (865396).

Almost surely, 2^12406425 is an apocalyptic number.

12406425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12406425 is a deficient number, since it is larger than the sum of its proper divisors (8363079).

12406425 is a wasteful number, since it uses less digits than its factorization.

12406425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089 (or 2084 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 12406425 is about 3522.2755428842. The cubic root of 12406425 is about 231.4988749873.

Adding to 12406425 its reverse (52460421), we get a palindrome (64866846).

The spelling of 12406425 in words is "twelve million, four hundred six thousand, four hundred twenty-five".