255665143 has 8 divisors (see below), whose sum is σ = 263184768. Its totient is φ = 248217144.

The previous prime is 255665141. The next prime is 255665161. The reversal of 255665143 is 341566552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255665143 - 2¹ = 255665141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255665141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10621 + ... + 24982.

It is an arithmetic number, because the mean of its divisors is an integer number (32898096).

Almost surely, 2^255665143 is an apocalyptic number.

255665143 is a deficient number, since it is larger than the sum of its proper divisors (7519625).

255665143 is a wasteful number, since it uses less digits than its factorization.

255665143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35813.

The product of its digits is 108000, while the sum is 37.

The square root of 255665143 is about 15989.5322945982. The cubic root of 255665143 is about 634.6834498052.

The spelling of 255665143 in words is "two hundred fifty-five million, six hundred sixty-five thousand, one hundred forty-three".