825057506 has 16 divisors (see below), whose sum is σ = 1523183424. Its totient is φ = 326396304.

The previous prime is 825057503. The next prime is 825057517. The reversal of 825057506 is 605750528.

It is a self number, because there is not a number n which added to its sum of digits gives 825057506.

It is not an unprimeable number, because it can be changed into a prime (825057503) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2266460 + ... + 2266823.

It is an arithmetic number, because the mean of its divisors is an integer number (95198964).

Almost surely, 2^825057506 is an apocalyptic number.

825057506 is a deficient number, since it is larger than the sum of its proper divisors (698125918).

825057506 is a wasteful number, since it uses less digits than its factorization.

825057506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533305.

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 825057506 is about 28723.8142662147. The cubic root of 825057506 is about 937.9105187849.

It can be divided in two parts, 8250 and 57506, that added together give a palindrome (65756).

The spelling of 825057506 in words is "eight hundred twenty-five million, fifty-seven thousand, five hundred six".