725759 has 4 divisors (see below), whose sum is σ = 738120. Its totient is φ = 713400.

The previous prime is 725749. The next prime is 725789. The reversal of 725759 is 957527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 957527 = 659 ⋅1453.

It is a cyclic number.

It is not a de Polignac number, because 725759 - 2¹² = 721663 is a prime.

It is a super-2 number, since 2×725759² = 1053452252162, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725759.

It is not an unprimeable number, because it can be changed into a prime (725749) 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 3 ways as a sum of consecutive naturals, for example, 6092 + ... + 6209.

It is an arithmetic number, because the mean of its divisors is an integer number (184530).

2⁷²⁵⁷⁵⁹ is an apocalyptic number.

725759 is a deficient number, since it is larger than the sum of its proper divisors (12361).

725759 is a wasteful number, since it uses less digits than its factorization.

725759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12360.

The product of its digits is 22050, while the sum is 35.

The square root of 725759 is about 851.9149018535. The cubic root of 725759 is about 89.8664273720.

The spelling of 725759 in words is "seven hundred twenty-five thousand, seven hundred fifty-nine".