505825285 has 24 divisors (see below), whose sum is σ = 707279256. Its totient is φ = 346268160.

The previous prime is 505825283. The next prime is 505825301. The reversal of 505825285 is 582528505.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 41293476 + 464531809 = 6426^2 + 21553^2 .

It is not a de Polignac number, because 505825285 - 2¹ = 505825283 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 (505825283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 185089 + ... + 187801.

It is an arithmetic number, because the mean of its divisors is an integer number (29469969).

Almost surely, 2^505825285 is an apocalyptic number.

It is an amenable number.

505825285 is a deficient number, since it is larger than the sum of its proper divisors (201453971).

505825285 is a wasteful number, since it uses less digits than its factorization.

505825285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493 (or 3486 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 40.

The square root of 505825285 is about 22490.5599085483. The cubic root of 505825285 is about 796.7709869829.

The spelling of 505825285 in words is "five hundred five million, eight hundred twenty-five thousand, two hundred eighty-five".