12143825 has 6 divisors (see below), whose sum is σ = 15058374. Its totient is φ = 9715040.

The previous prime is 12143809. The next prime is 12143843. The reversal of 12143825 is 52834121.

12143825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3041536 + 9102289 = 1744^2 + 3017^2 .

It is not a de Polignac number, because 12143825 - 2⁴ = 12143809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12143794 and 12143803.

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, 242852 + ... + 242901.

It is an arithmetic number, because the mean of its divisors is an integer number (2509729).

Almost surely, 2^12143825 is an apocalyptic number.

It is an amenable number.

12143825 is a deficient number, since it is larger than the sum of its proper divisors (2914549).

12143825 is an equidigital number, since it uses as much as digits as its factorization.

12143825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485763 (or 485758 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 12143825 is about 3484.7991333791. The cubic root of 12143825 is about 229.8538769394.

Adding to 12143825 its reverse (52834121), we get a palindrome (64977946).

The spelling of 12143825 in words is "twelve million, one hundred forty-three thousand, eight hundred twenty-five".