165110425 has 12 divisors (see below), whose sum is σ = 204905536. Its totient is φ = 131979600.

The previous prime is 165110419. The next prime is 165110453. The reversal of 165110425 is 524011561.

It is a happy number.

It is not a de Polignac number, because 165110425 - 2⁹ = 165109913 is a prime.

It is a super-2 number, since 2×165110425² = 54522904887361250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165110425.

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, 43972 + ... + 47578.

Almost surely, 2^165110425 is an apocalyptic number.

It is an amenable number.

165110425 is a deficient number, since it is larger than the sum of its proper divisors (39795111).

165110425 is a wasteful number, since it uses less digits than its factorization.

165110425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5448 (or 5443 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 165110425 is about 12849.5301470521. The cubic root of 165110425 is about 548.6029834660.

Adding to 165110425 its reverse (524011561), we get a palindrome (689121986).

The spelling of 165110425 in words is "one hundred sixty-five million, one hundred ten thousand, four hundred twenty-five".