12443425 has 6 divisors (see below), whose sum is σ = 15429878. Its totient is φ = 9954720.

The previous prime is 12443411. The next prime is 12443429. The reversal of 12443425 is 52434421.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1234321 + 11209104 = 1111^2 + 3348^2 .

It is not a de Polignac number, because 12443425 - 2¹³ = 12435233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 497737 = 12443425 / (1 + 2 + 4 + 4 + 3 + 4 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12443425.

It is not an unprimeable number, because it can be changed into a prime (12443429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 248844 + ... + 248893.

Almost surely, 2^12443425 is an apocalyptic number.

It is an amenable number.

12443425 is a deficient number, since it is larger than the sum of its proper divisors (2986453).

12443425 is an equidigital number, since it uses as much as digits as its factorization.

12443425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497747 (or 497742 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 12443425 is about 3527.5239191251. The cubic root of 12443425 is about 231.7287816005.

Adding to 12443425 its reverse (52434421), we get a palindrome (64877846).

The spelling of 12443425 in words is "twelve million, four hundred forty-three thousand, four hundred twenty-five".