4320225 has 72 divisors (see below), whose sum is σ = 9568832. Its totient is φ = 1814400.

The previous prime is 4320223. The next prime is 4320241. The reversal of 4320225 is 5220234.

4320225 is digitally balanced in base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4320225 - 2¹ = 4320223 is a prime.

4320225 is strictly pandigital in base 8.

It is a Curzon number.

4320225 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4320198 and 4320207.

It is not an unprimeable number, because it can be changed into a prime (4320223) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 20370 + ... + 20580.

Almost surely, 2^4320225 is an apocalyptic number.

4320225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4320225 is an abundant number, since it is smaller than the sum of its proper divisors (5248607).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4320225 is a wasteful number, since it uses less digits than its factorization.

4320225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 4320225 is about 2078.5150949656. The cubic root of 4320225 is about 162.8678844650.

Adding to 4320225 its reverse (5220234), we get a palindrome (9540459).

Subtracting 4320225 from its reverse (5220234), we obtain a palindrome (900009).

The spelling of 4320225 in words is "four million, three hundred twenty thousand, two hundred twenty-five".