825561933 has 16 divisors (see below), whose sum is σ = 1258567296. Its totient is φ = 471536640.

The previous prime is 825561923. The next prime is 825561959. The reversal of 825561933 is 339165528.

It is not a de Polignac number, because 825561933 - 2⁴ = 825561917 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825561923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46873 + ... + 62033.

It is an arithmetic number, because the mean of its divisors is an integer number (78660456).

Almost surely, 2^825561933 is an apocalyptic number.

It is an amenable number.

825561933 is a deficient number, since it is larger than the sum of its proper divisors (433005363).

825561933 is a wasteful number, since it uses less digits than its factorization.

825561933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17764.

The product of its digits is 194400, while the sum is 42.

The square root of 825561933 is about 28732.5935654963. The cubic root of 825561933 is about 938.1016210219.

The spelling of 825561933 in words is "eight hundred twenty-five million, five hundred sixty-one thousand, nine hundred thirty-three".