125997 has 4 divisors (see below), whose sum is σ = 168000. Its totient is φ = 83996.

The previous prime is 125963. The next prime is 126001. The reversal of 125997 is 799521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125997 - 2⁶ = 125933 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20997 + ... + 21002.

It is an arithmetic number, because the mean of its divisors is an integer number (42000).

2¹²⁵⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

125997 is a deficient number, since it is larger than the sum of its proper divisors (42003).

125997 is an equidigital number, since it uses as much as digits as its factorization.

125997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42002.

The product of its digits is 5670, while the sum is 33.

The square root of 125997 is about 354.9605611895. The cubic root of 125997 is about 50.1325814657.

The spelling of 125997 in words is "one hundred twenty-five thousand, nine hundred ninety-seven".