825926399 has 2 divisors, whose sum is σ = 825926400. Its totient is φ = 825926398.

The previous prime is 825926377. The next prime is 825926411. The reversal of 825926399 is 993629528.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-825926399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 825926399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (825926329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412963199 + 412963200.

It is an arithmetic number, because the mean of its divisors is an integer number (412963200).

Almost surely, 2^825926399 is an apocalyptic number.

825926399 is a deficient number, since it is larger than the sum of its proper divisors (1).

825926399 is an equidigital number, since it uses as much as digits as its factorization.

825926399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2099520, while the sum is 53.

The square root of 825926399 is about 28738.9352447164. The cubic root of 825926399 is about 938.2396505788.

The spelling of 825926399 in words is "eight hundred twenty-five million, nine hundred twenty-six thousand, three hundred ninety-nine".