18205325 has 12 divisors (see below), whose sum is σ = 23763360. Its totient is φ = 13797360.

The previous prime is 18205321. The next prime is 18205333. The reversal of 18205325 is 52350281.

It is not a de Polignac number, because 18205325 - 2² = 18205321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18205294 and 18205303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18205321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18689 + ... + 19638.

It is an arithmetic number, because the mean of its divisors is an integer number (1980280).

Almost surely, 2^18205325 is an apocalyptic number.

It is an amenable number.

18205325 is a deficient number, since it is larger than the sum of its proper divisors (5558035).

18205325 is a wasteful number, since it uses less digits than its factorization.

18205325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38356 (or 38351 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 18205325 is about 4266.7698555230. The cubic root of 18205325 is about 263.0668626715.

The spelling of 18205325 in words is "eighteen million, two hundred five thousand, three hundred twenty-five".