825711538 has 16 divisors (see below), whose sum is σ = 1304392320. Its totient is φ = 390935376.

The previous prime is 825711533. The next prime is 825711547. The reversal of 825711538 is 835117528.

It is a self number, because there is not a number n which added to its sum of digits gives 825711538.

It is not an unprimeable number, because it can be changed into a prime (825711533) 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, 101220 + ... + 109072.

It is an arithmetic number, because the mean of its divisors is an integer number (81524520).

Almost surely, 2^825711538 is an apocalyptic number.

825711538 is a deficient number, since it is larger than the sum of its proper divisors (478680782).

825711538 is a wasteful number, since it uses less digits than its factorization.

825711538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10641.

The product of its digits is 67200, while the sum is 40.

The square root of 825711538 is about 28735.1968498564. The cubic root of 825711538 is about 938.1582839286.

The spelling of 825711538 in words is "eight hundred twenty-five million, seven hundred eleven thousand, five hundred thirty-eight".