159909265 has 4 divisors (see below), whose sum is σ = 191891124. Its totient is φ = 127927408.

The previous prime is 159909257. The next prime is 159909287. The reversal of 159909265 is 562909951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 562909951 = 41 ⋅13729511.

It can be written as a sum of positive squares in 2 ways, for example, as 18584721 + 141324544 = 4311^2 + 11888^2 .

It is a cyclic number.

It is not a de Polignac number, because 159909265 - 2³ = 159909257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15990922 + ... + 15990931.

It is an arithmetic number, because the mean of its divisors is an integer number (47972781).

Almost surely, 2^159909265 is an apocalyptic number.

It is an amenable number.

159909265 is a deficient number, since it is larger than the sum of its proper divisors (31981859).

159909265 is an equidigital number, since it uses as much as digits as its factorization.

159909265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31981858.

The product of its (nonzero) digits is 218700, while the sum is 46.

The square root of 159909265 is about 12645.5235162487. The cubic root of 159909265 is about 542.7808819631.

The spelling of 159909265 in words is "one hundred fifty-nine million, nine hundred nine thousand, two hundred sixty-five".