820625283 has 8 divisors (see below), whose sum is σ = 1215741200. Its totient is φ = 547083504.

The previous prime is 820625279. The next prime is 820625297. The reversal of 820625283 is 382526028.

820625283 is a `hidden beast` number, since 8 + 2 + 0 + 625 + 28 + 3 = 666.

It is not a de Polignac number, because 820625283 - 2² = 820625279 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (820625243) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15196738 + ... + 15196791.

It is an arithmetic number, because the mean of its divisors is an integer number (151967650).

Almost surely, 2^820625283 is an apocalyptic number.

820625283 is a deficient number, since it is larger than the sum of its proper divisors (395115917).

820625283 is a wasteful number, since it uses less digits than its factorization.

820625283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30393538 (or 30393532 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 820625283 is about 28646.5579607743. The cubic root of 820625283 is about 936.2280119233.

It can be divided in two parts, 8206 and 25283, that added together give a square (33489 = 183²).

The spelling of 820625283 in words is "eight hundred twenty million, six hundred twenty-five thousand, two hundred eighty-three".