825408911 has 2 divisors, whose sum is σ = 825408912. Its totient is φ = 825408910.

The previous prime is 825408869. The next prime is 825408923. The reversal of 825408911 is 119804528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 825408911 - 2⁶ = 825408847 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825408011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412704455 + 412704456.

It is an arithmetic number, because the mean of its divisors is an integer number (412704456).

Almost surely, 2^825408911 is an apocalyptic number.

825408911 is a deficient number, since it is larger than the sum of its proper divisors (1).

825408911 is an equidigital number, since it uses as much as digits as its factorization.

825408911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 825408911 is about 28729.9305777094. The cubic root of 825408911 is about 938.0436568440.

The spelling of 825408911 in words is "eight hundred twenty-five million, four hundred eight thousand, nine hundred eleven".