255789538081 has 16 divisors (see below), whose sum is σ = 318932582400. Its totient is φ = 199300182480.

The previous prime is 255789538079. The next prime is 255789538097. The reversal of 255789538081 is 180835987552.

It is not a de Polignac number, because 255789538081 - 2¹ = 255789538079 is a prime.

It is a super-2 number, since 2×255789538081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255789538181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 855750 + ... + 1115296.

It is an arithmetic number, because the mean of its divisors is an integer number (19933286400).

Almost surely, 2^255789538081 is an apocalyptic number.

It is an amenable number.

255789538081 is a deficient number, since it is larger than the sum of its proper divisors (63143044319).

255789538081 is a wasteful number, since it uses less digits than its factorization.

255789538081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272364.

The product of its (nonzero) digits is 24192000, while the sum is 61.

It can be divided in two parts, 25578 and 9538081, that added together give a palindrome (9563659).

The spelling of 255789538081 in words is "two hundred fifty-five billion, seven hundred eighty-nine million, five hundred thirty-eight thousand, eighty-one".