255824792689 has 4 divisors (see below), whose sum is σ = 270873309924. Its totient is φ = 240776275456.

The previous prime is 255824792651. The next prime is 255824792701. The reversal of 255824792689 is 986297428552.

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 96537597025 + 159287195664 = 310705^2 + 399108^2 .

It is a cyclic number.

It is not a de Polignac number, because 255824792689 - 2¹⁵ = 255824759921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255824792189) 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 3 ways as a sum of consecutive naturals, for example, 7524258592 + ... + 7524258625.

It is an arithmetic number, because the mean of its divisors is an integer number (67718327481).

Almost surely, 2^255824792689 is an apocalyptic number.

It is an amenable number.

255824792689 is a deficient number, since it is larger than the sum of its proper divisors (15048517235).

255824792689 is a wasteful number, since it uses less digits than its factorization.

255824792689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15048517234.

The product of its digits is 174182400, while the sum is 67.

The spelling of 255824792689 in words is "two hundred fifty-five billion, eight hundred twenty-four million, seven hundred ninety-two thousand, six hundred eighty-nine".