125945 has 4 divisors (see below), whose sum is σ = 151140. Its totient is φ = 100752.

The previous prime is 125941. The next prime is 125959. The reversal of 125945 is 549521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 90601 + 35344 = 301^2 + 188^2 .

It is a cyclic number.

It is not a de Polignac number, because 125945 - 2² = 125941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12590 + ... + 12599.

It is an arithmetic number, because the mean of its divisors is an integer number (37785).

2¹²⁵⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

125945 is a deficient number, since it is larger than the sum of its proper divisors (25195).

125945 is an equidigital number, since it uses as much as digits as its factorization.

125945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25194.

The product of its digits is 1800, while the sum is 26.

The square root of 125945 is about 354.8873060564. The cubic root of 125945 is about 50.1256838069.

The spelling of 125945 in words is "one hundred twenty-five thousand, nine hundred forty-five".