255305555 has 4 divisors (see below), whose sum is σ = 306366672. Its totient is φ = 204244440.

The previous prime is 255305537. The next prime is 255305573. The reversal of 255305555 is 555503552.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (255305537) and next prime (255305573).

It is not a de Polignac number, because 255305555 - 2¹⁴ = 255289171 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, 25530551 + ... + 25530560.

It is an arithmetic number, because the mean of its divisors is an integer number (76591668).

Almost surely, 2^255305555 is an apocalyptic number.

255305555 is a deficient number, since it is larger than the sum of its proper divisors (51061117).

255305555 is an equidigital number, since it uses as much as digits as its factorization.

255305555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51061116.

The product of its (nonzero) digits is 93750, while the sum is 35.

The square root of 255305555 is about 15978.2838565348. The cubic root of 255305555 is about 634.3857535932.

The spelling of 255305555 in words is "two hundred fifty-five million, three hundred five thousand, five hundred fifty-five".