384818225 has 24 divisors (see below), whose sum is σ = 527912640. Its totient is φ = 275912000.

The previous prime is 384818201. The next prime is 384818227. The reversal of 384818225 is 522818483.

It is a de Polignac number, because none of the positive numbers 2^k-384818225 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (384818227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9671 + ... + 29379.

It is an arithmetic number, because the mean of its divisors is an integer number (21996360).

Almost surely, 2^384818225 is an apocalyptic number.

It is an amenable number.

384818225 is a deficient number, since it is larger than the sum of its proper divisors (143094415).

384818225 is a wasteful number, since it uses less digits than its factorization.

384818225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19801 (or 19796 counting only the distinct ones).

The product of its digits is 122880, while the sum is 41.

The square root of 384818225 is about 19616.7842675603. The cubic root of 384818225 is about 727.3641255753.

The spelling of 384818225 in words is "three hundred eighty-four million, eight hundred eighteen thousand, two hundred twenty-five".