2505644003 has 2 divisors, whose sum is σ = 2505644004. Its totient is φ = 2505644002.

The previous prime is 2505643961. The next prime is 2505644039. The reversal of 2505644003 is 3004465052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2505644003 - 2⁶ = 2505643939 is a prime.

It is not a weakly prime, because it can be changed into another prime (2505644203) 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 as a sum of consecutive naturals, namely, 1252822001 + 1252822002.

It is an arithmetic number, because the mean of its divisors is an integer number (1252822002).

Almost surely, 2^2505644003 is an apocalyptic number.

2505644003 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505644003 is an equidigital number, since it uses as much as digits as its factorization.

2505644003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 2505644003 is about 50056.4082111372. The cubic root of 2505644003 is about 1358.2293860745.

The spelling of 2505644003 in words is "two billion, five hundred five million, six hundred forty-four thousand, three".