256235063533 has 2 divisors, whose sum is σ = 256235063534. Its totient is φ = 256235063532.

The previous prime is 256235063509. The next prime is 256235063611. The reversal of 256235063533 is 335360532652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225376168644 + 30858894889 = 474738^2 + 175667^2 .

It is a cyclic number.

It is not a de Polignac number, because 256235063533 - 2¹⁷ = 256234932461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256235063533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256235063233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128117531766 + 128117531767.

It is an arithmetic number, because the mean of its divisors is an integer number (128117531767).

Almost surely, 2^256235063533 is an apocalyptic number.

It is an amenable number.

256235063533 is a deficient number, since it is larger than the sum of its proper divisors (1).

256235063533 is an equidigital number, since it uses as much as digits as its factorization.

256235063533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458000, while the sum is 43.

The spelling of 256235063533 in words is "two hundred fifty-six billion, two hundred thirty-five million, sixty-three thousand, five hundred thirty-three".