228505255 has 8 divisors (see below), whose sum is σ = 299134224. Its totient is φ = 166185600.

The previous prime is 228505187. The next prime is 228505261. The reversal of 228505255 is 552505822.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-228505255 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228505255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2077266 + ... + 2077375.

It is an arithmetic number, because the mean of its divisors is an integer number (37391778).

Almost surely, 2^228505255 is an apocalyptic number.

228505255 is a deficient number, since it is larger than the sum of its proper divisors (70628969).

228505255 is a wasteful number, since it uses less digits than its factorization.

228505255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154657.

The product of its (nonzero) digits is 40000, while the sum is 34.

The square root of 228505255 is about 15116.3902767824. The cubic root of 228505255 is about 611.3624076933.

The spelling of 228505255 in words is "two hundred twenty-eight million, five hundred five thousand, two hundred fifty-five".