18012325 has 12 divisors (see below), whose sum is σ = 22881348. Its totient is φ = 14057600.

The previous prime is 18012311. The next prime is 18012329. The reversal of 18012325 is 52321081.

It can be written as a sum of positive squares in 6 ways, for example, as 1803649 + 16208676 = 1343^2 + 4026^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18012325 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18012296 and 18012305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18012329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7762 + ... + 9811.

It is an arithmetic number, because the mean of its divisors is an integer number (1906779).

Almost surely, 2^18012325 is an apocalyptic number.

It is an amenable number.

18012325 is a deficient number, since it is larger than the sum of its proper divisors (4869023).

18012325 is a wasteful number, since it uses less digits than its factorization.

18012325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17624 (or 17619 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 18012325 is about 4244.0929537417. The cubic root of 18012325 is about 262.1339417693.

The spelling of 18012325 in words is "eighteen million, twelve thousand, three hundred twenty-five".