165225417 has 16 divisors (see below), whose sum is σ = 255532032. Its totient is φ = 93004560.

The previous prime is 165225409. The next prime is 165225421. The reversal of 165225417 is 714522561.

165225417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165225417 - 2³ = 165225409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165225427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57309 + ... + 60122.

It is an arithmetic number, because the mean of its divisors is an integer number (15970752).

Almost surely, 2^165225417 is an apocalyptic number.

It is an amenable number.

165225417 is a deficient number, since it is larger than the sum of its proper divisors (90306615).

165225417 is a wasteful number, since it uses less digits than its factorization.

165225417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117508.

The product of its digits is 16800, while the sum is 33.

The square root of 165225417 is about 12854.0039287375. The cubic root of 165225417 is about 548.7303130288.

Adding to 165225417 its reverse (714522561), we get a palindrome (879747978).

The spelling of 165225417 in words is "one hundred sixty-five million, two hundred twenty-five thousand, four hundred seventeen".