18327225 has 36 divisors (see below), whose sum is σ = 35255184. Its totient is φ = 8376480.

The previous prime is 18327223. The next prime is 18327233. The reversal of 18327225 is 52272381.

It is not a de Polignac number, because 18327225 - 2¹ = 18327223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18327192 and 18327201.

It is not an unprimeable number, because it can be changed into a prime (18327223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1182 + ... + 6168.

Almost surely, 2^18327225 is an apocalyptic number.

18327225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18327225 is a deficient number, since it is larger than the sum of its proper divisors (16927959).

18327225 is a wasteful number, since it uses less digits than its factorization.

18327225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5014 (or 5002 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 18327225 is about 4281.0308338063. The cubic root of 18327225 is about 263.6527085135.

The spelling of 18327225 in words is "eighteen million, three hundred twenty-seven thousand, two hundred twenty-five".