825806616 has 16 divisors (see below), whose sum is σ = 2064516600. Its totient is φ = 275268864.

The previous prime is 825806573. The next prime is 825806627. The reversal of 825806616 is 616608528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17204281 + ... + 17204328.

Almost surely, 2^825806616 is an apocalyptic number.

It is an amenable number.

825806616 is an abundant number, since it is smaller than the sum of its proper divisors (1238709984).

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

825806616 is a wasteful number, since it uses less digits than its factorization.

825806616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34408618 (or 34408614 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 825806616 is about 28736.8511844983. The cubic root of 825806616 is about 938.1942911724.

The spelling of 825806616 in words is "eight hundred twenty-five million, eight hundred six thousand, six hundred sixteen".