725717 has 4 divisors (see below), whose sum is σ = 737676. Its totient is φ = 713760.

The previous prime is 725687. The next prime is 725723. The reversal of 725717 is 717527.

725717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 401956 + 323761 = 634^2 + 569^2 .

It is a cyclic number.

It is not a de Polignac number, because 725717 - 2⁶ = 725653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 725717.

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 725717.

It is not an unprimeable number, because it can be changed into a prime (725737) 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, 5888 + ... + 6009.

It is an arithmetic number, because the mean of its divisors is an integer number (184419).

2⁷²⁵⁷¹⁷ is an apocalyptic number.

It is an amenable number.

725717 is a deficient number, since it is larger than the sum of its proper divisors (11959).

725717 is a wasteful number, since it uses less digits than its factorization.

725717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11958.

The product of its digits is 3430, while the sum is 29.

The square root of 725717 is about 851.8902511474. The cubic root of 725717 is about 89.8646938016.

The spelling of 725717 in words is "seven hundred twenty-five thousand, seven hundred seventeen".