255355553281 has 2 divisors, whose sum is σ = 255355553282. Its totient is φ = 255355553280.

The previous prime is 255355553261. The next prime is 255355553309. The reversal of 255355553281 is 182355553552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129660487056 + 125695066225 = 360084^2 + 354535^2 .

It is a cyclic number.

It is not a de Polignac number, because 255355553281 - 2¹⁵ = 255355520513 is a prime.

It is a super-3 number, since 3×255355553281³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (255355553261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127677776640 + 127677776641.

It is an arithmetic number, because the mean of its divisors is an integer number (127677776641).

Almost surely, 2^255355553281 is an apocalyptic number.

It is an amenable number.

255355553281 is a deficient number, since it is larger than the sum of its proper divisors (1).

255355553281 is an equidigital number, since it uses as much as digits as its factorization.

255355553281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4500000, while the sum is 49.

The spelling of 255355553281 in words is "two hundred fifty-five billion, three hundred fifty-five million, five hundred fifty-three thousand, two hundred eighty-one".