125903 has 4 divisors (see below), whose sum is σ = 126960. Its totient is φ = 124848.

The previous prime is 125899. The next prime is 125921. The reversal of 125903 is 309521.

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 is a cyclic number.

It is not a de Polignac number, because 125903 - 2² = 125899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 125903.

It is not an unprimeable number, because it can be changed into a prime (125933) 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, 323 + ... + 596.

It is an arithmetic number, because the mean of its divisors is an integer number (31740).

2¹²⁵⁹⁰³ is an apocalyptic number.

125903 is a deficient number, since it is larger than the sum of its proper divisors (1057).

125903 is an equidigital number, since it uses as much as digits as its factorization.

125903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 125903 is about 354.8281274082. The cubic root of 125903 is about 50.1201112348.

The spelling of 125903 in words is "one hundred twenty-five thousand, nine hundred three".