25166 has 4 divisors (see below), whose sum is σ = 37752. Its totient is φ = 12582.

The previous prime is 25163. The next prime is 25169. The reversal of 25166 is 66152.

25166 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25163) and next prime (25169).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25163) 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 as a sum of consecutive naturals, namely, 6290 + ... + 6293.

It is an arithmetic number, because the mean of its divisors is an integer number (9438).

2²⁵¹⁶⁶ is an apocalyptic number.

25166 is a deficient number, since it is larger than the sum of its proper divisors (12586).

25166 is a wasteful number, since it uses less digits than its factorization.

25166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12585.

The product of its digits is 360, while the sum is 20.

The square root of 25166 is about 158.6379525839. The cubic root of 25166 is about 29.3047529244.

It can be divided in two parts, 25 and 166, that added together give a palindrome (191).

The spelling of 25166 in words is "twenty-five thousand, one hundred sixty-six".