216225258 has 8 divisors (see below), whose sum is σ = 432450528. Its totient is φ = 72075084.

The previous prime is 216225253. The next prime is 216225283. The reversal of 216225258 is 852522612.

It is a happy number.

216225258 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

216225258 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216225253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18018766 + ... + 18018777.

It is an arithmetic number, because the mean of its divisors is an integer number (54056316).

Almost surely, 2^216225258 is an apocalyptic number.

216225258 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.

216225258 is a wasteful number, since it uses less digits than its factorization.

216225258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36037548.

The product of its digits is 19200, while the sum is 33.

The square root of 216225258 is about 14704.5998925506. The cubic root of 216225258 is about 600.2084997602.

The spelling of 216225258 in words is "two hundred sixteen million, two hundred twenty-five thousand, two hundred fifty-eight".