2505531563 has 2 divisors, whose sum is σ = 2505531564. Its totient is φ = 2505531562.

The previous prime is 2505531559. The next prime is 2505531571. The reversal of 2505531563 is 3651355052.

2505531563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2505531563 - 2² = 2505531559 is a prime.

It is not a weakly prime, because it can be changed into another prime (2505531533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252765781 + 1252765782.

It is an arithmetic number, because the mean of its divisors is an integer number (1252765782).

Almost surely, 2^2505531563 is an apocalyptic number.

2505531563 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505531563 is an equidigital number, since it uses as much as digits as its factorization.

2505531563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67500, while the sum is 35.

The square root of 2505531563 is about 50055.2850656152. The cubic root of 2505531563 is about 1358.2090690627.

The spelling of 2505531563 in words is "two billion, five hundred five million, five hundred thirty-one thousand, five hundred sixty-three".