423040225 has 24 divisors (see below), whose sum is σ = 555589440. Its totient is φ = 318640320.

The previous prime is 423040213. The next prime is 423040231. The reversal of 423040225 is 522040324.

It is not a de Polignac number, because 423040225 - 2⁵ = 423040193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423040196 and 423040205.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76659 + ... + 81991.

It is an arithmetic number, because the mean of its divisors is an integer number (23149560).

Almost surely, 2^423040225 is an apocalyptic number.

It is an amenable number.

423040225 is a deficient number, since it is larger than the sum of its proper divisors (132549215).

423040225 is a wasteful number, since it uses less digits than its factorization.

423040225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529 (or 5524 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 423040225 is about 20567.9416811698. The cubic root of 423040225 is about 750.6898689503.

Adding to 423040225 its reverse (522040324), we get a palindrome (945080549).

Subtracting 423040225 from its reverse (522040324), we obtain a palindrome (99000099).

The spelling of 423040225 in words is "four hundred twenty-three million, forty thousand, two hundred twenty-five".