4320725 has 6 divisors (see below), whose sum is σ = 5357730. Its totient is φ = 3456560.

The previous prime is 4320721. The next prime is 4320761. The reversal of 4320725 is 5270234.

It can be written as a sum of positive squares in 3 ways, for example, as 31684 + 4289041 = 178^2 + 2071^2 .

It is not a de Polignac number, because 4320725 - 2² = 4320721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4320725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4320721) 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 5 ways as a sum of consecutive naturals, for example, 86390 + ... + 86439.

It is an arithmetic number, because the mean of its divisors is an integer number (892955).

Almost surely, 2^4320725 is an apocalyptic number.

It is an amenable number.

4320725 is a deficient number, since it is larger than the sum of its proper divisors (1037005).

4320725 is a wasteful number, since it uses less digits than its factorization.

4320725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172839 (or 172834 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 4320725 is about 2078.6353696596. The cubic root of 4320725 is about 162.8741673785.

Adding to 4320725 its reverse (5270234), we get a palindrome (9590959).

The spelling of 4320725 in words is "four million, three hundred twenty thousand, seven hundred twenty-five".