827505285 has 16 divisors (see below), whose sum is σ = 1369664640. Its totient is φ = 426117440.

The previous prime is 827505281. The next prime is 827505317. The reversal of 827505285 is 582505728.

It is not a de Polignac number, because 827505285 - 2² = 827505281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (827505281) 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, 950721 + ... + 951590.

It is an arithmetic number, because the mean of its divisors is an integer number (85604040).

Almost surely, 2^827505285 is an apocalyptic number.

It is an amenable number.

827505285 is a deficient number, since it is larger than the sum of its proper divisors (542159355).

827505285 is a wasteful number, since it uses less digits than its factorization.

827505285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902348.

The product of its (nonzero) digits is 224000, while the sum is 42.

The square root of 827505285 is about 28766.3915881016. The cubic root of 827505285 is about 938.8371333948.

The spelling of 827505285 in words is "eight hundred twenty-seven million, five hundred five thousand, two hundred eighty-five".