659725 has 12 divisors (see below), whose sum is σ = 892800. Its totient is φ = 479600.

The previous prime is 659723. The next prime is 659741. The reversal of 659725 is 527956.

It is not a de Polignac number, because 659725 - 2¹ = 659723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 925 + ... + 1474.

It is an arithmetic number, because the mean of its divisors is an integer number (74400).

2⁶⁵⁹⁷²⁵ is an apocalyptic number.

It is an amenable number.

659725 is a deficient number, since it is larger than the sum of its proper divisors (233075).

659725 is a wasteful number, since it uses less digits than its factorization.

659725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420 (or 2415 counting only the distinct ones).

The product of its digits is 18900, while the sum is 34.

The square root of 659725 is about 812.2345720295. The cubic root of 659725 is about 87.0537827489.

Subtracting from 659725 its reverse (527956), we obtain a square (131769 = 363²).

The spelling of 659725 in words is "six hundred fifty-nine thousand, seven hundred twenty-five".