850566825 has 72 divisors (see below), whose sum is σ = 1663261600. Its totient is φ = 429701760.

The previous prime is 850566793. The next prime is 850566881. The reversal of 850566825 is 528665058.

850566825 is a `hidden beast` number, since 8 + 5 + 0 + 566 + 82 + 5 = 666.

It is not a de Polignac number, because 850566825 - 2⁵ = 850566793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 111741 + ... + 119109.

Almost surely, 2^850566825 is an apocalyptic number.

It is an amenable number.

850566825 is a deficient number, since it is larger than the sum of its proper divisors (812694775).

850566825 is a wasteful number, since it uses less digits than its factorization.

850566825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7413 (or 7396 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The square root of 850566825 is about 29164.4788227049. The cubic root of 850566825 is about 947.4787532684.

The spelling of 850566825 in words is "eight hundred fifty million, five hundred sixty-six thousand, eight hundred twenty-five".