1285855282 has 16 divisors (see below), whose sum is σ = 2047649760. Its totient is φ = 603505728.

The previous prime is 1285855279. The next prime is 1285855289. The reversal of 1285855282 is 2825585821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1285855289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37008 + ... + 62779.

It is an arithmetic number, because the mean of its divisors is an integer number (127978110).

Almost surely, 2^1285855282 is an apocalyptic number.

1285855282 is a deficient number, since it is larger than the sum of its proper divisors (761794478).

1285855282 is a wasteful number, since it uses less digits than its factorization.

1285855282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100185.

The product of its digits is 512000, while the sum is 46.

The square root of 1285855282 is about 35858.8243254014. The cubic root of 1285855282 is about 1087.4201202965.

The spelling of 1285855282 in words is "one billion, two hundred eighty-five million, eight hundred fifty-five thousand, two hundred eighty-two".