66925 has 6 divisors (see below), whose sum is σ = 83018. Its totient is φ = 53520.

The previous prime is 66923. The next prime is 66931. The reversal of 66925 is 52966.

It can be written as a sum of positive squares in 3 ways, for example, as 361 + 66564 = 19^2 + 258^2 .

It is not a de Polignac number, because 66925 - 2¹ = 66923 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66893 and 66902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1314 + ... + 1363.

2⁶⁶⁹²⁵ is an apocalyptic number.

It is an amenable number.

66925 is a deficient number, since it is larger than the sum of its proper divisors (16093).

66925 is a wasteful number, since it uses less digits than its factorization.

66925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687 (or 2682 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 66925 is about 258.6986664055. The cubic root of 66925 is about 40.6003203158.

The spelling of 66925 in words is "sixty-six thousand, nine hundred twenty-five".