165336225 has 12 divisors (see below), whose sum is σ = 273356016. Its totient is φ = 88179280.

The previous prime is 165336187. The next prime is 165336257. The reversal of 165336225 is 522633561.

165336225 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 165336225 - 2⁸ = 165335969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1102167 + ... + 1102316.

It is an arithmetic number, because the mean of its divisors is an integer number (22779668).

Almost surely, 2^165336225 is an apocalyptic number.

165336225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165336225 is a deficient number, since it is larger than the sum of its proper divisors (108019791).

165336225 is a wasteful number, since it uses less digits than its factorization.

165336225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204496 (or 2204491 counting only the distinct ones).

The product of its digits is 32400, while the sum is 33.

The square root of 165336225 is about 12858.3134586150. The cubic root of 165336225 is about 548.8529538066.

Adding to 165336225 its reverse (522633561), we get a palindrome (687969786).

It can be divided in two parts, 165336 and 225, that added together give a palindrome (165561).

The spelling of 165336225 in words is "one hundred sixty-five million, three hundred thirty-six thousand, two hundred twenty-five".