18633225 has 48 divisors (see below), whose sum is σ = 34372800. Its totient is φ = 8843520.

The previous prime is 18633221. The next prime is 18633239. The reversal of 18633225 is 52233681.

It is not a de Polignac number, because 18633225 - 2² = 18633221 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18633192 and 18633201.

It is not an unprimeable number, because it can be changed into a prime (18633221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27946 + ... + 28604.

It is an arithmetic number, because the mean of its divisors is an integer number (716100).

Almost surely, 2^18633225 is an apocalyptic number.

18633225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18633225 is a deficient number, since it is larger than the sum of its proper divisors (15739575).

18633225 is a wasteful number, since it uses less digits than its factorization.

18633225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714 (or 709 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 18633225 is about 4316.6219431403. The cubic root of 18633225 is about 265.1119735651. Note that the first 3 decimals are identical.

It can be divided in two parts, 186 and 33225, that added together give a triangular number (33411 = T₂₅₈).

The spelling of 18633225 in words is "eighteen million, six hundred thirty-three thousand, two hundred twenty-five".