125170203 has 4 divisors (see below), whose sum is σ = 166893608. Its totient is φ = 83446800.

The previous prime is 125170193. The next prime is 125170229. The reversal of 125170203 is 302071521.

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

It is not a de Polignac number, because 125170203 - 2¹⁸ = 124908059 is a prime.

It is a super-2 number, since 2×125170203² = 31335159438122418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125170203.

It is not an unprimeable number, because it can be changed into a prime (125171203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20861698 + ... + 20861703.

It is an arithmetic number, because the mean of its divisors is an integer number (41723402).

Almost surely, 2^125170203 is an apocalyptic number.

125170203 is a deficient number, since it is larger than the sum of its proper divisors (41723405).

125170203 is an equidigital number, since it uses as much as digits as its factorization.

125170203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41723404.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 125170203 is about 11187.9490077494. The cubic root of 125170203 is about 500.2268344101.

The spelling of 125170203 in words is "one hundred twenty-five million, one hundred seventy thousand, two hundred three".