12018425 has 6 divisors (see below), whose sum is σ = 14902878. Its totient is φ = 9614720.

The previous prime is 12018401. The next prime is 12018437. The reversal of 12018425 is 52481021.

It can be written as a sum of positive squares in 3 ways, for example, as 942841 + 11075584 = 971^2 + 3328^2 .

It is not a de Polignac number, because 12018425 - 2⁸ = 12018169 is a prime.

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 12018425.

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, 240344 + ... + 240393.

It is an arithmetic number, because the mean of its divisors is an integer number (2483813).

Almost surely, 2^12018425 is an apocalyptic number.

It is an amenable number.

12018425 is a deficient number, since it is larger than the sum of its proper divisors (2884453).

12018425 is an equidigital number, since it uses as much as digits as its factorization.

12018425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480747 (or 480742 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 12018425 is about 3466.7600147688. The cubic root of 12018425 is about 229.0599628131.

Adding to 12018425 its reverse (52481021), we get a palindrome (64499446).

The spelling of 12018425 in words is "twelve million, eighteen thousand, four hundred twenty-five".