285052505 has 16 divisors (see below), whose sum is σ = 348076224. Its totient is φ = 224051520.

The previous prime is 285052489. The next prime is 285052507. The reversal of 285052505 is 505250582.

It is not a de Polignac number, because 285052505 - 2⁴ = 285052489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285052507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163619 + ... + 165351.

It is an arithmetic number, because the mean of its divisors is an integer number (21754764).

Almost surely, 2^285052505 is an apocalyptic number.

It is an amenable number.

285052505 is a deficient number, since it is larger than the sum of its proper divisors (63023719).

285052505 is a wasteful number, since it uses less digits than its factorization.

285052505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296.

The product of its (nonzero) digits is 20000, while the sum is 32.

The square root of 285052505 is about 16883.4980084105. The cubic root of 285052505 is about 658.1248465846.

It can be divided in two parts, 2850 and 52505, that added together give a palindrome (55355).

The spelling of 285052505 in words is "two hundred eighty-five million, fifty-two thousand, five hundred five".