165355265 has 8 divisors (see below), whose sum is σ = 199523688. Its totient is φ = 131552640.

The previous prime is 165355261. The next prime is 165355291. The reversal of 165355265 is 562553561.

165355265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14753281 + 150601984 = 3841^2 + 12272^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165355265 - 2² = 165355261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165355261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90452 + ... + 92261.

It is an arithmetic number, because the mean of its divisors is an integer number (24940461).

Almost surely, 2^165355265 is an apocalyptic number.

It is an amenable number.

165355265 is a deficient number, since it is larger than the sum of its proper divisors (34168423).

165355265 is a wasteful number, since it uses less digits than its factorization.

165355265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182899.

The product of its digits is 135000, while the sum is 38.

The square root of 165355265 is about 12859.0538143364. The cubic root of 165355265 is about 548.8740215009.

The spelling of 165355265 in words is "one hundred sixty-five million, three hundred fifty-five thousand, two hundred sixty-five".