255082561 has 2 divisors, whose sum is σ = 255082562. Its totient is φ = 255082560.

The previous prime is 255082559. The next prime is 255082567. The reversal of 255082561 is 165280552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140185600 + 114896961 = 11840^2 + 10719^2 .

It is a cyclic number.

It is not a de Polignac number, because 255082561 - 2¹ = 255082559 is a prime.

It is a super-2 number, since 2×255082561² = 130134225852637442, which contains 22 as substring.

Together with 255082559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (255082567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127541280 + 127541281.

It is an arithmetic number, because the mean of its divisors is an integer number (127541281).

Almost surely, 2^255082561 is an apocalyptic number.

It is an amenable number.

255082561 is a deficient number, since it is larger than the sum of its proper divisors (1).

255082561 is an equidigital number, since it uses as much as digits as its factorization.

255082561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 255082561 is about 15971.3042986476. The cubic root of 255082561 is about 634.2010005645.

The spelling of 255082561 in words is "two hundred fifty-five million, eighty-two thousand, five hundred sixty-one".