425165 has 16 divisors (see below), whose sum is σ = 569856. Its totient is φ = 302400.

The previous prime is 425149. The next prime is 425189. The reversal of 425165 is 561524.

It is not a de Polignac number, because 425165 - 2⁴ = 425149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 425165.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425165.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1910 + ... + 2120.

It is an arithmetic number, because the mean of its divisors is an integer number (35616).

2⁴²⁵¹⁶⁵ is an apocalyptic number.

It is an amenable number.

425165 is a deficient number, since it is larger than the sum of its proper divisors (144691).

425165 is a wasteful number, since it uses less digits than its factorization.

425165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260.

The product of its digits is 1200, while the sum is 23.

The square root of 425165 is about 652.0467774631. The cubic root of 425165 is about 75.1944583399.

Adding to 425165 its reverse (561524), we get a palindrome (986689).

It can be divided in two parts, 425 and 165, that multiplied together give a triangular number (70125 = T₃₇₄).

The spelling of 425165 in words is "four hundred twenty-five thousand, one hundred sixty-five".