125199 has 8 divisors (see below), whose sum is σ = 185520. Its totient is φ = 83448.

The previous prime is 125197. The next prime is 125201. The reversal of 125199 is 991521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (125197) and next prime (125201).

It is not a de Polignac number, because 125199 - 2¹ = 125197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4637 = 125199 / (1 + 2 + 5 + 1 + 9 + 9).

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2292 + ... + 2345.

It is an arithmetic number, because the mean of its divisors is an integer number (23190).

2¹²⁵¹⁹⁹ is an apocalyptic number.

125199 is a deficient number, since it is larger than the sum of its proper divisors (60321).

125199 is an equidigital number, since it uses as much as digits as its factorization.

125199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4646 (or 4640 counting only the distinct ones).

The product of its digits is 810, while the sum is 27.

The square root of 125199 is about 353.8347071727. The cubic root of 125199 is about 50.0265192654.

It can be divided in two parts, 125 and 199, that added together give a square (324 = 18²).

The spelling of 125199 in words is "one hundred twenty-five thousand, one hundred ninety-nine".