125566 has 8 divisors (see below), whose sum is σ = 215280. Its totient is φ = 53808.

The previous prime is 125551. The next prime is 125591. The reversal of 125566 is 665521.

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

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 125566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4471 + ... + 4498.

It is an arithmetic number, because the mean of its divisors is an integer number (26910).

2¹²⁵⁵⁶⁶ is an apocalyptic number.

125566 is a deficient number, since it is larger than the sum of its proper divisors (89714).

125566 is an equidigital number, since it uses as much as digits as its factorization.

125566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8978.

The product of its digits is 1800, while the sum is 25.

The square root of 125566 is about 354.3529314116. The cubic root of 125566 is about 50.0753530480.

The spelling of 125566 in words is "one hundred twenty-five thousand, five hundred sixty-six".