825781042 has 16 divisors (see below), whose sum is σ = 1249032960. Its totient is φ = 409451472.

The previous prime is 825781039. The next prime is 825781067. The reversal of 825781042 is 240187528.

It is a junction number, because it is equal to n+sod(n) for n = 825780992 and 825781010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116533 + ... + 123415.

It is an arithmetic number, because the mean of its divisors is an integer number (78064560).

Almost surely, 2^825781042 is an apocalyptic number.

825781042 is a deficient number, since it is larger than the sum of its proper divisors (423251918).

825781042 is a wasteful number, since it uses less digits than its factorization.

825781042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7377.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 825781042 is about 28736.4062123293. The cubic root of 825781042 is about 938.1846062461.

The spelling of 825781042 in words is "eight hundred twenty-five million, seven hundred eighty-one thousand, forty-two".