825564736 has 14 divisors (see below), whose sum is σ = 1638230150. Its totient is φ = 412782336.

The previous prime is 825564661. The next prime is 825564767. The reversal of 825564736 is 637465528.

It can be written as a sum of positive squares in only one way, i.e., 639078400 + 186486336 = 25280^2 + 13656^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6449661 + ... + 6449788.

Almost surely, 2^825564736 is an apocalyptic number.

It is an amenable number.

825564736 is a deficient number, since it is larger than the sum of its proper divisors (812665414).

825564736 is a wasteful number, since it uses less digits than its factorization.

825564736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12899461 (or 12899451 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 46.

The square root of 825564736 is about 28732.6423428128. The cubic root of 825564736 is about 938.1026827213.

The spelling of 825564736 in words is "eight hundred twenty-five million, five hundred sixty-four thousand, seven hundred thirty-six".