825856775 has 18 divisors (see below), whose sum is σ = 1030814232. Its totient is φ = 656357200.

The previous prime is 825856769. The next prime is 825856777. The reversal of 825856775 is 577658528.

It is not a de Polignac number, because 825856775 - 2²⁴ = 809079559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825856777) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 800510 + ... + 801540.

Almost surely, 2^825856775 is an apocalyptic number.

825856775 is a deficient number, since it is larger than the sum of its proper divisors (204957457).

825856775 is a wasteful number, since it uses less digits than its factorization.

825856775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399 (or 1215 counting only the distinct ones).

The product of its digits is 4704000, while the sum is 53.

The square root of 825856775 is about 28737.7239008242. The cubic root of 825856775 is about 938.2132859079.

The spelling of 825856775 in words is "eight hundred twenty-five million, eight hundred fifty-six thousand, seven hundred seventy-five".