218125086 has 8 divisors (see below), whose sum is σ = 436250184. Its totient is φ = 72708360.

The previous prime is 218125069. The next prime is 218125097. The reversal of 218125086 is 680521812.

It is a sphenic number, since it is the product of 3 distinct primes.

218125086 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 18177085 + ... + 18177096.

It is an arithmetic number, because the mean of its divisors is an integer number (54531273).

Almost surely, 2^218125086 is an apocalyptic number.

218125086 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218125086 is a wasteful number, since it uses less digits than its factorization.

218125086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36354186.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 218125086 is about 14769.0583992345. The cubic root of 218125086 is about 601.9612543725.

Adding to 218125086 its reverse (680521812), we get a palindrome (898646898).

The spelling of 218125086 in words is "two hundred eighteen million, one hundred twenty-five thousand, eighty-six".