165025101 has 4 divisors (see below), whose sum is σ = 220033472. Its totient is φ = 110016732.

The previous prime is 165025073. The next prime is 165025111. The reversal of 165025101 is 101520561.

165025101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 165025101 - 2²² = 160830797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165025111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27504181 + ... + 27504186.

It is an arithmetic number, because the mean of its divisors is an integer number (55008368).

Almost surely, 2^165025101 is an apocalyptic number.

It is an amenable number.

165025101 is a deficient number, since it is larger than the sum of its proper divisors (55008371).

165025101 is an equidigital number, since it uses as much as digits as its factorization.

165025101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55008370.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 165025101 is about 12846.2095966086. The cubic root of 165025101 is about 548.5084667884.

Adding to 165025101 its reverse (101520561), we get a palindrome (266545662).

The spelling of 165025101 in words is "one hundred sixty-five million, twenty-five thousand, one hundred one".