505000500505 has 4 divisors (see below), whose sum is σ = 606000600612. Its totient is φ = 404000400400.

The previous prime is 505000500479. The next prime is 505000500551. The reversal of 505000500505 is 505005000505.

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 239465379904 + 265535120601 = 489352^2 + 515301^2 .

It is not a de Polignac number, because 505000500505 - 2²⁵ = 504966946073 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 505000500505.

It is an unprimeable number.

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, 50500050046 + ... + 50500050055.

It is an arithmetic number, because the mean of its divisors is an integer number (151500150153).

Almost surely, 2^505000500505 is an apocalyptic number.

It is an amenable number.

505000500505 is a deficient number, since it is larger than the sum of its proper divisors (101000100107).

505000500505 is a wasteful number, since it uses less digits than its factorization.

505000500505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101000100106.

The product of its (nonzero) digits is 3125, while the sum is 25.

The spelling of 505000500505 in words is "five hundred five billion, five hundred thousand, five hundred five".