12321425 has 12 divisors (see below), whose sum is σ = 15439116. Its totient is φ = 9753600.

The previous prime is 12321409. The next prime is 12321431. The reversal of 12321425 is 52412321.

It can be written as a sum of positive squares in 6 ways, for example, as 1615441 + 10705984 = 1271^2 + 3272^2 .

It is not a de Polignac number, because 12321425 - 2⁴ = 12321409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12321397 and 12321406.

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, 116 + ... + 4965.

It is an arithmetic number, because the mean of its divisors is an integer number (1286593).

Almost surely, 2^12321425 is an apocalyptic number.

It is an amenable number.

12321425 is a deficient number, since it is larger than the sum of its proper divisors (3117691).

12321425 is an equidigital number, since it uses as much as digits as its factorization.

12321425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188 (or 5183 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 12321425 is about 3510.1887413642. The cubic root of 12321425 is about 230.9689744255.

Adding to 12321425 its reverse (52412321), we get a palindrome (64733746).

The spelling of 12321425 in words is "twelve million, three hundred twenty-one thousand, four hundred twenty-five".