65725 has 12 divisors (see below), whose sum is σ = 89280. Its totient is φ = 47600.

The previous prime is 65719. The next prime is 65729. The reversal of 65725 is 52756.

It is a happy number.

It is not a de Polignac number, because 65725 - 2³ = 65717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

65725 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 65725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65729) 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, 156 + ... + 394.

It is an arithmetic number, because the mean of its divisors is an integer number (7440).

2⁶⁵⁷²⁵ is an apocalyptic number.

It is an amenable number.

65725 is a deficient number, since it is larger than the sum of its proper divisors (23555).

65725 is a wasteful number, since it uses less digits than its factorization.

65725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 255 counting only the distinct ones).

The product of its digits is 2100, while the sum is 25.

The square root of 65725 is about 256.3688748659. The cubic root of 65725 is about 40.3561937356.

The spelling of 65725 in words is "sixty-five thousand, seven hundred twenty-five".