825886631 has 2 divisors, whose sum is σ = 825886632. Its totient is φ = 825886630.

The previous prime is 825886601. The next prime is 825886637. The reversal of 825886631 is 136688528.

825886631 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 a de Polignac number, because none of the positive numbers 2^k-825886631 is a prime.

It is a super-2 number, since 2×825886631² = 1364177454529060322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825886637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412943315 + 412943316.

It is an arithmetic number, because the mean of its divisors is an integer number (412943316).

Almost surely, 2^825886631 is an apocalyptic number.

825886631 is a deficient number, since it is larger than the sum of its proper divisors (1).

825886631 is an equidigital number, since it uses as much as digits as its factorization.

825886631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 552960, while the sum is 47.

The square root of 825886631 is about 28738.2433527173. The cubic root of 825886631 is about 938.2245917255.

The spelling of 825886631 in words is "eight hundred twenty-five million, eight hundred eighty-six thousand, six hundred thirty-one".