425305 has 4 divisors (see below), whose sum is σ = 510372. Its totient is φ = 340240.

The previous prime is 425297. The next prime is 425309. The reversal of 425305 is 503524.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 301401 + 123904 = 549^2 + 352^2 .

It is not a de Polignac number, because 425305 - 2³ = 425297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425309) 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, 42526 + ... + 42535.

It is an arithmetic number, because the mean of its divisors is an integer number (127593).

2⁴²⁵³⁰⁵ is an apocalyptic number.

It is an amenable number.

425305 is a deficient number, since it is larger than the sum of its proper divisors (85067).

425305 is an equidigital number, since it uses as much as digits as its factorization.

425305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85066.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 425305 is about 652.1541228881. The cubic root of 425305 is about 75.2027108763.

Adding to 425305 its reverse (503524), we get a palindrome (928829).

The spelling of 425305 in words is "four hundred twenty-five thousand, three hundred five".