1659072325 has 6 divisors (see below), whose sum is σ = 2057249714. Its totient is φ = 1327257840.

The previous prime is 1659072319. The next prime is 1659072367. The reversal of 1659072325 is 5232709561.

It can be written as a sum of positive squares in 3 ways, for example, as 400880484 + 1258191841 = 20022^2 + 35471^2 .

It is not a de Polignac number, because 1659072325 - 2¹⁹ = 1658548037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33181422 + ... + 33181471.

Almost surely, 2^1659072325 is an apocalyptic number.

It is an amenable number.

1659072325 is a deficient number, since it is larger than the sum of its proper divisors (398177389).

1659072325 is an equidigital number, since it uses as much as digits as its factorization.

1659072325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66362903 (or 66362898 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 1659072325 is about 40731.7115402729. The cubic root of 1659072325 is about 1183.8275418118.

The spelling of 1659072325 in words is "one billion, six hundred fifty-nine million, seventy-two thousand, three hundred twenty-five".