825082785 has 24 divisors (see below), whose sum is σ = 1434222504. Its totient is φ = 438789120.

The previous prime is 825082781. The next prime is 825082813. The reversal of 825082785 is 587280528.

It can be written as a sum of positive squares in 4 ways, for example, as 646416 + 824436369 = 804^2 + 28713^2 .

It is not a de Polignac number, because 825082785 - 2² = 825082781 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 825082785.

It is not an unprimeable number, because it can be changed into a prime (825082781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10086 + ... + 41855.

It is an arithmetic number, because the mean of its divisors is an integer number (59759271).

Almost surely, 2^825082785 is an apocalyptic number.

It is an amenable number.

825082785 is a deficient number, since it is larger than the sum of its proper divisors (609139719).

825082785 is a wasteful number, since it uses less digits than its factorization.

825082785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52305 (or 52302 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 825082785 is about 28724.2542984148. The cubic root of 825082785 is about 937.9200975911.

The spelling of 825082785 in words is "eight hundred twenty-five million, eighty-two thousand, seven hundred eighty-five".