825566533 has 16 divisors (see below), whose sum is σ = 926354880. Its totient is φ = 729129600.

The previous prime is 825566513. The next prime is 825566537. The reversal of 825566533 is 335665528.

It is a cyclic number.

It is not a de Polignac number, because 825566533 - 2⁵ = 825566501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 825566533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825566537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394153 + ... + 396241.

It is an arithmetic number, because the mean of its divisors is an integer number (57897180).

Almost surely, 2^825566533 is an apocalyptic number.

It is an amenable number.

825566533 is a deficient number, since it is larger than the sum of its proper divisors (100788347).

825566533 is a wasteful number, since it uses less digits than its factorization.

825566533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108.

The product of its digits is 648000, while the sum is 43.

The square root of 825566533 is about 28732.6736138494. The cubic root of 825566533 is about 938.1033633743.

The spelling of 825566533 in words is "eight hundred twenty-five million, five hundred sixty-six thousand, five hundred thirty-three".