725322431 has 8 divisors (see below), whose sum is σ = 746295984. Its totient is φ = 704505280.

The previous prime is 725322427. The next prime is 725322443. The reversal of 725322431 is 134223527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 725322431 - 2² = 725322427 is a prime.

It is a super-3 number, since 3×725322431³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725322394 and 725322403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725322401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29660 + ... + 48273.

It is an arithmetic number, because the mean of its divisors is an integer number (93286998).

Almost surely, 2^725322431 is an apocalyptic number.

725322431 is a deficient number, since it is larger than the sum of its proper divisors (20973553).

725322431 is a wasteful number, since it uses less digits than its factorization.

725322431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78201.

The product of its digits is 10080, while the sum is 29.

The square root of 725322431 is about 26931.8107634819. The cubic root of 725322431 is about 898.4840450871.

Adding to 725322431 its reverse (134223527), we get a palindrome (859545958).

The spelling of 725322431 in words is "seven hundred twenty-five million, three hundred twenty-two thousand, four hundred thirty-one".