125849 has 4 divisors (see below), whose sum is σ = 126564. Its totient is φ = 125136.

The previous prime is 125821. The next prime is 125863. The reversal of 125849 is 948521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 40000 + 85849 = 200^2 + 293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125849 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 125849.

It is not an unprimeable number, because it can be changed into a prime (125899) 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, 119 + ... + 515.

It is an arithmetic number, because the mean of its divisors is an integer number (31641).

2¹²⁵⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

125849 is a deficient number, since it is larger than the sum of its proper divisors (715).

125849 is an equidigital number, since it uses as much as digits as its factorization.

125849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714.

The product of its digits is 2880, while the sum is 29.

The square root of 125849 is about 354.7520260689. The cubic root of 125849 is about 50.1129446779.

The spelling of 125849 in words is "one hundred twenty-five thousand, eight hundred forty-nine".