825368881 has 2 divisors, whose sum is σ = 825368882. Its totient is φ = 825368880.

The previous prime is 825368851. The next prime is 825368891. The reversal of 825368881 is 188863528.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 666104481 + 159264400 = 25809^2 + 12620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-825368881 is a prime.

It is a super-2 number, since 2×825368881² = 1362467579446384322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (825368851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412684440 + 412684441.

It is an arithmetic number, because the mean of its divisors is an integer number (412684441).

Almost surely, 2^825368881 is an apocalyptic number.

It is an amenable number.

825368881 is a deficient number, since it is larger than the sum of its proper divisors (1).

825368881 is an equidigital number, since it uses as much as digits as its factorization.

825368881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 737280, while the sum is 49.

The square root of 825368881 is about 28729.2339090342. The cubic root of 825368881 is about 938.0284924432.

The spelling of 825368881 in words is "eight hundred twenty-five million, three hundred sixty-eight thousand, eight hundred eighty-one".