6565252501 has 2 divisors, whose sum is σ = 6565252502. Its totient is φ = 6565252500.

The previous prime is 6565252489. The next prime is 6565252511. The reversal of 6565252501 is 1052525656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4007523025 + 2557729476 = 63305^2 + 50574^2 .

It is a cyclic number.

It is not a de Polignac number, because 6565252501 - 2⁷ = 6565252373 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6565252511) 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, 3282626250 + 3282626251.

It is an arithmetic number, because the mean of its divisors is an integer number (3282626251).

Almost surely, 2^6565252501 is an apocalyptic number.

It is an amenable number.

6565252501 is a deficient number, since it is larger than the sum of its proper divisors (1).

6565252501 is an equidigital number, since it uses as much as digits as its factorization.

6565252501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 6565252501 is about 81026.2457540765. The cubic root of 6565252501 is about 1872.4798142331.

The spelling of 6565252501 in words is "six billion, five hundred sixty-five million, two hundred fifty-two thousand, five hundred one".