255004795505 has 4 divisors (see below), whose sum is σ = 306005754612. Its totient is φ = 204003836400.

The previous prime is 255004795501. The next prime is 255004795517. The reversal of 255004795505 is 505597400552.

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 41076344929 + 213928450576 = 202673^2 + 462524^2 .

It is not a de Polignac number, because 255004795505 - 2² = 255004795501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255004795505.

It is not an unprimeable number, because it can be changed into a prime (255004795501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25500479546 + ... + 25500479555.

It is an arithmetic number, because the mean of its divisors is an integer number (76501438653).

Almost surely, 2^255004795505 is an apocalyptic number.

It is an amenable number.

255004795505 is a deficient number, since it is larger than the sum of its proper divisors (51000959107).

255004795505 is an equidigital number, since it uses as much as digits as its factorization.

255004795505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51000959106.

The product of its (nonzero) digits is 1575000, while the sum is 47.

The spelling of 255004795505 in words is "two hundred fifty-five billion, four million, seven hundred ninety-five thousand, five hundred five".