425205 has 24 divisors (see below), whose sum is σ = 804960. Its totient is φ = 205920.

The previous prime is 425197. The next prime is 425207. The reversal of 425205 is 502524.

It is not a de Polignac number, because 425205 - 2³ = 425197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66 + ... + 924.

It is an arithmetic number, because the mean of its divisors is an integer number (33540).

2⁴²⁵²⁰⁵ is an apocalyptic number.

425205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

425205 is a deficient number, since it is larger than the sum of its proper divisors (379755).

425205 is a wasteful number, since it uses less digits than its factorization.

425205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 425205 is about 652.0774493877. The cubic root of 425205 is about 75.1968163923.

Adding to 425205 its reverse (502524), we get a palindrome (927729).

It can be divided in two parts, 425 and 205, that added together give a triangular number (630 = T₃₅).

The spelling of 425205 in words is "four hundred twenty-five thousand, two hundred five".