12231425 has 6 divisors (see below), whose sum is σ = 15166998. Its totient is φ = 9785120.

The previous prime is 12231419. The next prime is 12231431. The reversal of 12231425 is 52413221.

It is an interprime number because it is at equal distance from previous prime (12231419) and next prime (12231431).

It can be written as a sum of positive squares in 3 ways, for example, as 9409 + 12222016 = 97^2 + 3496^2 .

It is not a de Polignac number, because 12231425 - 2⁸ = 12231169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12231397 and 12231406.

It is a congruent number.

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, 244604 + ... + 244653.

It is an arithmetic number, because the mean of its divisors is an integer number (2527833).

Almost surely, 2^12231425 is an apocalyptic number.

It is an amenable number.

12231425 is a deficient number, since it is larger than the sum of its proper divisors (2935573).

12231425 is an equidigital number, since it uses as much as digits as its factorization.

12231425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489267 (or 489262 counting only the distinct ones).

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

The square root of 12231425 is about 3497.3454218879. The cubic root of 12231425 is about 230.4052402137.

Adding to 12231425 its reverse (52413221), we get a palindrome (64644646).

The spelling of 12231425 in words is "twelve million, two hundred thirty-one thousand, four hundred twenty-five".