1503425503 has 4 divisors (see below), whose sum is σ = 1503523800. Its totient is φ = 1503327208.

The previous prime is 1503425449. The next prime is 1503425527. The reversal of 1503425503 is 3055243051.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1503425503 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 (1503425543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20728 + ... + 58621.

It is an arithmetic number, because the mean of its divisors is an integer number (375880950).

Almost surely, 2^1503425503 is an apocalyptic number.

1503425503 is a deficient number, since it is larger than the sum of its proper divisors (98297).

1503425503 is an equidigital number, since it uses as much as digits as its factorization.

1503425503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98296.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 1503425503 is about 38774.0312967326. The cubic root of 1503425503 is about 1145.5849627598.

Adding to 1503425503 its reverse (3055243051), we get a palindrome (4558668554).

It can be divided in two parts, 150 and 3425503, that added together give a triangular number (3425653 = T₂₆₁₇).

The spelling of 1503425503 in words is "one billion, five hundred three million, four hundred twenty-five thousand, five hundred three".