2500505549 has 2 divisors, whose sum is σ = 2500505550. Its totient is φ = 2500505548.

The previous prime is 2500505533. The next prime is 2500505569. The reversal of 2500505549 is 9455050052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2490708649 + 9796900 = 49907^2 + 3130^2 .

It is a cyclic number.

It is not a de Polignac number, because 2500505549 - 2⁴ = 2500505533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2500505509) 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, 1250252774 + 1250252775.

It is an arithmetic number, because the mean of its divisors is an integer number (1250252775).

Almost surely, 2^2500505549 is an apocalyptic number.

It is an amenable number.

2500505549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500505549 is an equidigital number, since it uses as much as digits as its factorization.

2500505549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 2500505549 is about 50005.0552344460. The cubic root of 2500505549 is about 1357.3002868723.

The spelling of 2500505549 in words is "two billion, five hundred million, five hundred five thousand, five hundred forty-nine".