725234320 has 40 divisors (see below), whose sum is σ = 1744319160. Its totient is φ = 280089600.

The previous prime is 725234309. The next prime is 725234327. The reversal of 725234320 is 23432527.

It can be written as a sum of positive squares in 4 ways, for example, as 95023504 + 630210816 = 9748^2 + 25104^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (725234327) 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 7 ways as a sum of consecutive naturals, for example, 153981 + ... + 158620.

It is an arithmetic number, because the mean of its divisors is an integer number (43607979).

Almost surely, 2^725234320 is an apocalyptic number.

It is an amenable number.

725234320 is an abundant number, since it is smaller than the sum of its proper divisors (1019084840).

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

725234320 is a wasteful number, since it uses less digits than its factorization.

725234320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312643 (or 312637 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 725234320 is about 26930.1748973155. The cubic root of 725234320 is about 898.4476614826.

Adding to 725234320 its reverse (23432527), we get a palindrome (748666847).

The spelling of 725234320 in words is "seven hundred twenty-five million, two hundred thirty-four thousand, three hundred twenty".