165475265 has 8 divisors (see below), whose sum is σ = 199058280. Its totient is φ = 132054912.

The previous prime is 165475259. The next prime is 165475267. The reversal of 165475265 is 562574561.

It can be written as a sum of positive squares in 4 ways, for example, as 17901361 + 147573904 = 4231^2 + 12148^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 165475265 - 2⁶ = 165475201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165475267) 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, 38414 + ... + 42503.

It is an arithmetic number, because the mean of its divisors is an integer number (24882285).

Almost surely, 2^165475265 is an apocalyptic number.

It is an amenable number.

165475265 is a deficient number, since it is larger than the sum of its proper divisors (33583015).

165475265 is an equidigital number, since it uses as much as digits as its factorization.

165475265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81331.

The product of its digits is 252000, while the sum is 41.

The square root of 165475265 is about 12863.7189412704. The cubic root of 165475265 is about 549.0067638845.

It can be divided in two parts, 16547 and 5265, that added together give a palindrome (21812).

The spelling of 165475265 in words is "one hundred sixty-five million, four hundred seventy-five thousand, two hundred sixty-five".