125779 has 4 divisors (see below), whose sum is σ = 127576. Its totient is φ = 123984.

The previous prime is 125777. The next prime is 125789. The reversal of 125779 is 977521.

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

It is a cyclic number.

It is not a de Polignac number, because 125779 - 2¹ = 125777 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 125779.

It is not an unprimeable number, because it can be changed into a prime (125777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789 + ... + 934.

It is an arithmetic number, because the mean of its divisors is an integer number (31894).

2¹²⁵⁷⁷⁹ is an apocalyptic number.

125779 is a deficient number, since it is larger than the sum of its proper divisors (1797).

125779 is an equidigital number, since it uses as much as digits as its factorization.

125779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796.

The product of its digits is 4410, while the sum is 31.

The square root of 125779 is about 354.6533518804. The cubic root of 125779 is about 50.1036516449.

The spelling of 125779 in words is "one hundred twenty-five thousand, seven hundred seventy-nine".