423512125 has 8 divisors (see below), whose sum is σ = 528543288. Its totient is φ = 338809600.

The previous prime is 423512123. The next prime is 423512129. The reversal of 423512125 is 521215324.

It can be written as a sum of positive squares in 4 ways, for example, as 25190361 + 398321764 = 5019^2 + 19958^2 .

It is not a de Polignac number, because 423512125 - 2¹ = 423512123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423512125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423512123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693924 + ... + 1694173.

It is an arithmetic number, because the mean of its divisors is an integer number (66067911).

Almost surely, 2^423512125 is an apocalyptic number.

It is an amenable number.

423512125 is a deficient number, since it is larger than the sum of its proper divisors (105031163).

423512125 is an equidigital number, since it uses as much as digits as its factorization.

423512125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3388112 (or 3388102 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 423512125 is about 20579.4102199261. The cubic root of 423512125 is about 750.9688959301.

Adding to 423512125 its reverse (521215324), we get a palindrome (944727449).

The spelling of 423512125 in words is "four hundred twenty-three million, five hundred twelve thousand, one hundred twenty-five".