6520255073 has 4 divisors (see below), whose sum is σ = 6803744448. Its totient is φ = 6236765700.

The previous prime is 6520255067. The next prime is 6520255097. The reversal of 6520255073 is 3705520256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6520255073 - 2¹⁰ = 6520254049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6520225073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141744653 + ... + 141744698.

It is an arithmetic number, because the mean of its divisors is an integer number (1700936112).

Almost surely, 2^6520255073 is an apocalyptic number.

It is an amenable number.

6520255073 is a deficient number, since it is larger than the sum of its proper divisors (283489375).

6520255073 is a wasteful number, since it uses less digits than its factorization.

6520255073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283489374.

The product of its (nonzero) digits is 63000, while the sum is 35.

The square root of 6520255073 is about 80748.0964048070. The cubic root of 6520255073 is about 1868.1920884571.

The spelling of 6520255073 in words is "six billion, five hundred twenty million, two hundred fifty-five thousand, seventy-three".