725331 has 8 divisors (see below), whose sum is σ = 990864. Its totient is φ = 471680.

The previous prime is 725327. The next prime is 725341. The reversal of 725331 is 133527.

It is a happy number.

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 725331 - 2² = 725327 is a prime.

It is a super-2 number, since 2×725331² = 1052210119122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 725298 and 725307.

It is not an unprimeable number, because it can be changed into a prime (725321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2826 + ... + 3071.

It is an arithmetic number, because the mean of its divisors is an integer number (123858).

2⁷²⁵³³¹ is an apocalyptic number.

725331 is a deficient number, since it is larger than the sum of its proper divisors (265533).

725331 is a wasteful number, since it uses less digits than its factorization.

725331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5941.

The product of its digits is 630, while the sum is 21.

The square root of 725331 is about 851.6636660091. The cubic root of 725331 is about 89.8487583320.

Adding to 725331 its reverse (133527), we get a palindrome (858858).

The spelling of 725331 in words is "seven hundred twenty-five thousand, three hundred thirty-one".