256526273 has 4 divisors (see below), whose sum is σ = 256604100. Its totient is φ = 256448448.

The previous prime is 256526119. The next prime is 256526327. The reversal of 256526273 is 372625652.

It is a happy number.

256526273 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 2347024 + 254179249 = 1532^2 + 15943^2 .

It is a cyclic number.

It is not a de Polignac number, because 256526273 - 2¹² = 256522177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256526573) 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, 33740 + ... + 40637.

It is an arithmetic number, because the mean of its divisors is an integer number (64151025).

Almost surely, 2^256526273 is an apocalyptic number.

It is an amenable number.

256526273 is a deficient number, since it is larger than the sum of its proper divisors (77827).

256526273 is an equidigital number, since it uses as much as digits as its factorization.

256526273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77826.

The product of its digits is 151200, while the sum is 38.

The square root of 256526273 is about 16016.4375876785. The cubic root of 256526273 is about 635.3952304245.

It can be divided in two parts, 2565 and 26273, that multiplied together give a triangular number (67390245 = T₁₁₆₀₉).

The spelling of 256526273 in words is "two hundred fifty-six million, five hundred twenty-six thousand, two hundred seventy-three".