255027805 has 4 divisors (see below), whose sum is σ = 306033372. Its totient is φ = 204022240.

The previous prime is 255027803. The next prime is 255027821. The reversal of 255027805 is 508720552.

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 82210489 + 172817316 = 9067^2 + 13146^2 .

It is not a de Polignac number, because 255027805 - 2¹ = 255027803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255027803) 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, 25502776 + ... + 25502785.

It is an arithmetic number, because the mean of its divisors is an integer number (76508343).

Almost surely, 2^255027805 is an apocalyptic number.

It is an amenable number.

255027805 is a deficient number, since it is larger than the sum of its proper divisors (51005567).

255027805 is an equidigital number, since it uses as much as digits as its factorization.

255027805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51005566.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 255027805 is about 15969.5900072607. The cubic root of 255027805 is about 634.1556181402.

The spelling of 255027805 in words is "two hundred fifty-five million, twenty-seven thousand, eight hundred five".