423625 has 8 divisors (see below), whose sum is σ = 528840. Its totient is φ = 338800.

The previous prime is 423617. The next prime is 423649. The reversal of 423625 is 526324.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3721 + 419904 = 61^2 + 648^2 .

It is not a de Polignac number, because 423625 - 2³ = 423617 is a prime.

423625 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 423596 and 423605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1570 + ... + 1819.

It is an arithmetic number, because the mean of its divisors is an integer number (66105).

2⁴²³⁶²⁵ is an apocalyptic number.

It is an amenable number.

423625 is a deficient number, since it is larger than the sum of its proper divisors (105215).

423625 is an equidigital number, since it uses as much as digits as its factorization.

423625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404 (or 3394 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 423625 is about 650.8648093114. The cubic root of 423625 is about 75.1035606405.

Adding to 423625 its reverse (526324), we get a palindrome (949949).

The spelling of 423625 in words is "four hundred twenty-three thousand, six hundred twenty-five".