2501542403 has 4 divisors (see below), whose sum is σ = 2510573520. Its totient is φ = 2492511288.

The previous prime is 2501542331. The next prime is 2501542411. The reversal of 2501542403 is 3042451052.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2501542403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2501542423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4515143 + ... + 4515696.

It is an arithmetic number, because the mean of its divisors is an integer number (627643380).

Almost surely, 2^2501542403 is an apocalyptic number.

2501542403 is a deficient number, since it is larger than the sum of its proper divisors (9031117).

2501542403 is an equidigital number, since it uses as much as digits as its factorization.

2501542403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9031116.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2501542403 is about 50015.4216517266. The cubic root of 2501542403 is about 1357.4878659744.

Adding to 2501542403 its reverse (3042451052), we get a palindrome (5543993455).

The spelling of 2501542403 in words is "two billion, five hundred one million, five hundred forty-two thousand, four hundred three".