2256305 has 8 divisors (see below), whose sum is σ = 2718144. Its totient is φ = 1798000.

The previous prime is 2256299. The next prime is 2256311. The reversal of 2256305 is 5036522.

It is a happy number.

2256305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2256299) and next prime (2256311).

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

It is not a de Polignac number, because 2256305 - 2⁸ = 2256049 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 830 + ... + 2280.

It is an arithmetic number, because the mean of its divisors is an integer number (339768).

2^2256305 is an apocalyptic number.

It is an amenable number.

2256305 is a deficient number, since it is larger than the sum of its proper divisors (461839).

2256305 is a wasteful number, since it uses less digits than its factorization.

2256305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 2256305 is about 1502.1001963917. The cubic root of 2256305 is about 131.1593538886.

The spelling of 2256305 in words is "two million, two hundred fifty-six thousand, three hundred five".