255302805 has 16 divisors (see below), whose sum is σ = 422570880. Its totient is φ = 131466048.

The previous prime is 255302713. The next prime is 255302807. The reversal of 255302805 is 508203552.

It is not a de Polignac number, because 255302805 - 2⁹ = 255302293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255302807) 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 15 ways as a sum of consecutive naturals, for example, 293017 + ... + 293886.

It is an arithmetic number, because the mean of its divisors is an integer number (26410680).

Almost surely, 2^255302805 is an apocalyptic number.

It is an amenable number.

255302805 is a deficient number, since it is larger than the sum of its proper divisors (167268075).

255302805 is a wasteful number, since it uses less digits than its factorization.

255302805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586940.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 255302805 is about 15978.1978020051. The cubic root of 255302805 is about 634.3834758427.

The spelling of 255302805 in words is "two hundred fifty-five million, three hundred two thousand, eight hundred five".