725533 has 4 divisors (see below), whose sum is σ = 745180. Its totient is φ = 705888.

The previous prime is 725531. The next prime is 725537. The reversal of 725533 is 335527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 700569 + 24964 = 837^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 725533 - 2¹ = 725531 is a prime.

It is a d-powerful number, because it can be written as 7⁵ + 2⁷ + 5 + 5 + 3¹¹ + 3¹² .

It is a junction number, because it is equal to n+sod(n) for n = 725498 and 725507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9768 + ... + 9841.

It is an arithmetic number, because the mean of its divisors is an integer number (186295).

2⁷²⁵⁵³³ is an apocalyptic number.

It is an amenable number.

725533 is a deficient number, since it is larger than the sum of its proper divisors (19647).

725533 is a wasteful number, since it uses less digits than its factorization.

725533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19646.

The product of its digits is 3150, while the sum is 25.

The square root of 725533 is about 851.7822491694. The cubic root of 725533 is about 89.8570983242.

The spelling of 725533 in words is "seven hundred twenty-five thousand, five hundred thirty-three".