825042851 has 2 divisors, whose sum is σ = 825042852. Its totient is φ = 825042850.

The previous prime is 825042817. The next prime is 825042857. The reversal of 825042851 is 158240528.

It is a happy number.

825042851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 825042851 - 2⁶ = 825042787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (825042857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412521425 + 412521426.

It is an arithmetic number, because the mean of its divisors is an integer number (412521426).

Almost surely, 2^825042851 is an apocalyptic number.

825042851 is a deficient number, since it is larger than the sum of its proper divisors (1).

825042851 is an equidigital number, since it uses as much as digits as its factorization.

825042851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 825042851 is about 28723.5591631678. The cubic root of 825042851 is about 937.9049655720.

The spelling of 825042851 in words is "eight hundred twenty-five million, forty-two thousand, eight hundred fifty-one".