825723522 has 54 divisors (see below), whose sum is σ = 1940999931. Its totient is φ = 253581120.

The previous prime is 825723491. The next prime is 825723551. The reversal of 825723522 is 225327528.

It is a happy number.

825723522 is a `hidden beast` number, since 82 + 57 + 2 + 3 + 522 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 24890121 + 800833401 = 4989^2 + 28299^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=20319.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 1584622 + ... + 1585142.

Almost surely, 2^825723522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 825723522

825723522 is an abundant number, since it is smaller than the sum of its proper divisors (1115276409).

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

825723522 is a wasteful number, since it uses less digits than its factorization.

825723522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076 (or 539 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 825723522 is about 28735.4053738589. The cubic root of 825723522 is about 938.1628225735.

The spelling of 825723522 in words is "eight hundred twenty-five million, seven hundred twenty-three thousand, five hundred twenty-two".