425173 has 6 divisors (see below), whose sum is σ = 494646. Its totient is φ = 364392.

The previous prime is 425149. The next prime is 425189. The reversal of 425173 is 371524.

It can be written as a sum of positive squares in only one way, i.e., 321489 + 103684 = 567^2 + 322^2 .

It is not a de Polignac number, because 425173 - 2⁹ = 424661 is a prime.

It is a Duffinian number.

425173 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4290 + ... + 4387.

It is an arithmetic number, because the mean of its divisors is an integer number (82441).

2⁴²⁵¹⁷³ is an apocalyptic number.

It is an amenable number.

425173 is a deficient number, since it is larger than the sum of its proper divisors (69473).

425173 is an equidigital number, since it uses as much as digits as its factorization.

425173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8691 (or 8684 counting only the distinct ones).

The product of its digits is 840, while the sum is 22.

The square root of 425173 is about 652.0529119634. The cubic root of 425173 is about 75.1949299622.

Adding to 425173 its reverse (371524), we get a palindrome (796697).

The spelling of 425173 in words is "four hundred twenty-five thousand, one hundred seventy-three".