825308664 has 16 divisors (see below), whose sum is σ = 2063271720. Its totient is φ = 275102880.

The previous prime is 825308657. The next prime is 825308669. The reversal of 825308664 is 466803528.

825308664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×825308664² = 1362268781746929792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825308669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17193907 + ... + 17193954.

Almost surely, 2^825308664 is an apocalyptic number.

It is an amenable number.

825308664 is an abundant number, since it is smaller than the sum of its proper divisors (1237963056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

825308664 is a wasteful number, since it uses less digits than its factorization.

825308664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34387870 (or 34387866 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 825308664 is about 28728.1858807687. The cubic root of 825308664 is about 938.0056797604.

The spelling of 825308664 in words is "eight hundred twenty-five million, three hundred eight thousand, six hundred sixty-four".