256354195 has 4 divisors (see below), whose sum is σ = 307625040. Its totient is φ = 205083352.

The previous prime is 256354187. The next prime is 256354201. The reversal of 256354195 is 591453652.

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

It is a cyclic number.

It is not a de Polignac number, because 256354195 - 2³ = 256354187 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25635415 + ... + 25635424.

It is an arithmetic number, because the mean of its divisors is an integer number (76906260).

Almost surely, 2^256354195 is an apocalyptic number.

256354195 is a deficient number, since it is larger than the sum of its proper divisors (51270845).

256354195 is an equidigital number, since it uses as much as digits as its factorization.

256354195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51270844.

The product of its digits is 162000, while the sum is 40.

The square root of 256354195 is about 16011.0647678410. The cubic root of 256354195 is about 635.2531241259.

The spelling of 256354195 in words is "two hundred fifty-six million, three hundred fifty-four thousand, one hundred ninety-five".