228854428585 has 4 divisors (see below), whose sum is σ = 274625314308. Its totient is φ = 183083542864.

The previous prime is 228854428577. The next prime is 228854428633. The reversal of 228854428585 is 585824458822.

228854428585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 181560357801 + 47294070784 = 426099^2 + 217472^2 .

It is a cyclic number.

It is not a de Polignac number, because 228854428585 - 2³ = 228854428577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22885442854 + ... + 22885442863.

It is an arithmetic number, because the mean of its divisors is an integer number (68656328577).

Almost surely, 2^228854428585 is an apocalyptic number.

It is an amenable number.

228854428585 is a deficient number, since it is larger than the sum of its proper divisors (45770885723).

228854428585 is an equidigital number, since it uses as much as digits as its factorization.

228854428585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45770885722.

The product of its digits is 65536000, while the sum is 61.

The spelling of 228854428585 in words is "two hundred twenty-eight billion, eight hundred fifty-four million, four hundred twenty-eight thousand, five hundred eighty-five".