218325105 has 64 divisors (see below), whose sum is σ = 417484800. Its totient is φ = 107904960.

The previous prime is 218325091. The next prime is 218325167. The reversal of 218325105 is 501523812.

It is a happy number.

It is not a de Polignac number, because 218325105 - 2¹² = 218321009 is a prime.

It is a super-2 number, since 2×218325105² = 95331702946522050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 119650 + ... + 121460.

It is an arithmetic number, because the mean of its divisors is an integer number (6523200).

Almost surely, 2^218325105 is an apocalyptic number.

It is an amenable number.

218325105 is a deficient number, since it is larger than the sum of its proper divisors (199159695).

218325105 is a wasteful number, since it uses less digits than its factorization.

218325105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891 (or 1885 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 218325105 is about 14775.8284031725. The cubic root of 218325105 is about 602.1451960823.

Adding to 218325105 its reverse (501523812), we get a palindrome (719848917).

The spelling of 218325105 in words is "two hundred eighteen million, three hundred twenty-five thousand, one hundred five".