825373489 has 2 divisors, whose sum is σ = 825373490. Its totient is φ = 825373488.

The previous prime is 825373487. The next prime is 825373537. The reversal of 825373489 is 984373528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 729000000 + 96373489 = 27000^2 + 9817^2 .

It is a cyclic number.

It is not a de Polignac number, because 825373489 - 2¹ = 825373487 is a prime.

Together with 825373487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (825373487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412686744 + 412686745.

It is an arithmetic number, because the mean of its divisors is an integer number (412686745).

Almost surely, 2^825373489 is an apocalyptic number.

It is an amenable number.

825373489 is a deficient number, since it is larger than the sum of its proper divisors (1).

825373489 is an equidigital number, since it uses as much as digits as its factorization.

825373489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 49.

The square root of 825373489 is about 28729.3141059789. The cubic root of 825373489 is about 938.0302380979.

The spelling of 825373489 in words is "eight hundred twenty-five million, three hundred seventy-three thousand, four hundred eighty-nine".