256530235 has 16 divisors (see below), whose sum is σ = 339605280. Its totient is φ = 184815360.

The previous prime is 256530233. The next prime is 256530269. The reversal of 256530235 is 532035652.

It is not a de Polignac number, because 256530235 - 2¹ = 256530233 is a prime.

It is a super-2 number, since 2×256530235² = 131615522938310450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256530197 and 256530206.

It is not an unprimeable number, because it can be changed into a prime (256530233) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 45465 + ... + 50794.

It is an arithmetic number, because the mean of its divisors is an integer number (21225330).

Almost surely, 2^256530235 is an apocalyptic number.

256530235 is a deficient number, since it is larger than the sum of its proper divisors (83075045).

256530235 is a wasteful number, since it uses less digits than its factorization.

256530235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96318.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 256530235 is about 16016.5612726328. The cubic root of 256530235 is about 635.3985015942.

Adding to 256530235 its reverse (532035652), we get a palindrome (788565887).

The spelling of 256530235 in words is "two hundred fifty-six million, five hundred thirty thousand, two hundred thirty-five".