125430205 has 4 divisors (see below), whose sum is σ = 150516252. Its totient is φ = 100344160.

The previous prime is 125430203. The next prime is 125430209. The reversal of 125430205 is 502034521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 92871769 + 32558436 = 9637^2 + 5706^2 .

It is not a de Polignac number, because 125430205 - 2¹ = 125430203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125430203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12543016 + ... + 12543025.

It is an arithmetic number, because the mean of its divisors is an integer number (37629063).

Almost surely, 2^125430205 is an apocalyptic number.

It is an amenable number.

125430205 is a deficient number, since it is larger than the sum of its proper divisors (25086047).

125430205 is an equidigital number, since it uses as much as digits as its factorization.

125430205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25086046.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 125430205 is about 11199.5627146777. The cubic root of 125430205 is about 500.5729498728.

Adding to 125430205 its reverse (502034521), we get a palindrome (627464726).

The spelling of 125430205 in words is "one hundred twenty-five million, four hundred thirty thousand, two hundred five".