725606 has 8 divisors (see below), whose sum is σ = 1243920. Its totient is φ = 310968.

The previous prime is 725603. The next prime is 725639. The reversal of 725606 is 606527.

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

It is a Curzon number.

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 725606.

It is not an unprimeable number, because it can be changed into a prime (725603) 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, 25901 + ... + 25928.

It is an arithmetic number, because the mean of its divisors is an integer number (155490).

2⁷²⁵⁶⁰⁶ is an apocalyptic number.

725606 is a deficient number, since it is larger than the sum of its proper divisors (518314).

725606 is a wasteful number, since it uses less digits than its factorization.

725606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51838.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 725606 is about 851.8250994189. The cubic root of 725606 is about 89.8601119010.

It can be divided in two parts, 725 and 606, that added together give a palindrome (1331).

The spelling of 725606 in words is "seven hundred twenty-five thousand, six hundred six".