825693899 has 2 divisors, whose sum is σ = 825693900. Its totient is φ = 825693898.

The previous prime is 825693889. The next prime is 825693901. The reversal of 825693899 is 998396528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 825693899 - 2⁸ = 825693643 is a prime.

Together with 825693901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (825693809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412846949 + 412846950.

It is an arithmetic number, because the mean of its divisors is an integer number (412846950).

Almost surely, 2^825693899 is an apocalyptic number.

825693899 is a deficient number, since it is larger than the sum of its proper divisors (1).

825693899 is an equidigital number, since it uses as much as digits as its factorization.

825693899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8398080, while the sum is 59.

The square root of 825693899 is about 28734.8899249675. The cubic root of 825693899 is about 938.1516035118.

It can be divided in two parts, 82569 and 3899, that added together give a palindrome (86468).

The spelling of 825693899 in words is "eight hundred twenty-five million, six hundred ninety-three thousand, eight hundred ninety-nine".