1255500203 has 8 divisors (see below), whose sum is σ = 1278994320. Its totient is φ = 1232146080.

The previous prime is 1255500187. The next prime is 1255500251. The reversal of 1255500203 is 3020055521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1255500203 - 2⁴ = 1255500187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255500263) 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 7 ways as a sum of consecutive naturals, for example, 16808 + ... + 52853.

It is an arithmetic number, because the mean of its divisors is an integer number (159874290).

Almost surely, 2^1255500203 is an apocalyptic number.

1255500203 is a deficient number, since it is larger than the sum of its proper divisors (23494117).

1255500203 is an equidigital number, since it uses as much as digits as its factorization.

1255500203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69997.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 1255500203 is about 35433.0382976115. The cubic root of 1255500203 is about 1078.7950103651.

Adding to 1255500203 its reverse (3020055521), we get a palindrome (4275555724).

The spelling of 1255500203 in words is "one billion, two hundred fifty-five million, five hundred thousand, two hundred three".