1003125503 has 2 divisors, whose sum is σ = 1003125504. Its totient is φ = 1003125502.

The previous prime is 1003125491. The next prime is 1003125509. The reversal of 1003125503 is 3055213001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1003125503 - 2²⁰ = 1002076927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1003125509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501562751 + 501562752.

It is an arithmetic number, because the mean of its divisors is an integer number (501562752).

Almost surely, 2^1003125503 is an apocalyptic number.

1003125503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003125503 is an equidigital number, since it uses as much as digits as its factorization.

1003125503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 1003125503 is about 31672.1565890294. The cubic root of 1003125503 is about 1001.0407507953.

Adding to 1003125503 its reverse (3055213001), we get a palindrome (4058338504).

The spelling of 1003125503 in words is "one billion, three million, one hundred twenty-five thousand, five hundred three".