255105505 has 4 divisors (see below), whose sum is σ = 306126612. Its totient is φ = 204084400.

The previous prime is 255105481. The next prime is 255105511. The reversal of 255105505 is 505501552.

It is a happy number.

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 53919649 + 201185856 = 7343^2 + 14184^2 .

It is not a de Polignac number, because 255105505 - 2²⁷ = 120887777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25510546 + ... + 25510555.

It is an arithmetic number, because the mean of its divisors is an integer number (76531653).

Almost surely, 2^255105505 is an apocalyptic number.

It is an amenable number.

255105505 is a deficient number, since it is larger than the sum of its proper divisors (51021107).

255105505 is an equidigital number, since it uses as much as digits as its factorization.

255105505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51021106.

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 255105505 is about 15972.0225707329. The cubic root of 255105505 is about 634.2200148939.

The spelling of 255105505 in words is "two hundred fifty-five million, one hundred five thousand, five hundred five".