825857506 has 8 divisors (see below), whose sum is σ = 1269000684. Its totient is φ = 402857280.

The previous prime is 825857497. The next prime is 825857551. The reversal of 825857506 is 605758528.

825857506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 762256881 + 63600625 = 27609^2 + 7975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 5035635 + ... + 5035798.

Almost surely, 2^825857506 is an apocalyptic number.

825857506 is a deficient number, since it is larger than the sum of its proper divisors (443143178).

825857506 is a wasteful number, since it uses less digits than its factorization.

825857506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10071476.

The product of its (nonzero) digits is 672000, while the sum is 46.

The square root of 825857506 is about 28737.7366192955. The cubic root of 825857506 is about 938.2135627249.

The spelling of 825857506 in words is "eight hundred twenty-five million, eight hundred fifty-seven thousand, five hundred six".