6505250511 has 16 divisors (see below), whose sum is σ = 8819022848. Its totient is φ = 4264207200.

The previous prime is 6505250509. The next prime is 6505250539. The reversal of 6505250511 is 1150525056.

It is not a de Polignac number, because 6505250511 - 2¹ = 6505250509 is a prime.

It is a super-2 number, since 2×6505250511² = 84636568421731522242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6505257511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747990 + ... + 756636.

It is an arithmetic number, because the mean of its divisors is an integer number (551188928).

Almost surely, 2^6505250511 is an apocalyptic number.

6505250511 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

6505250511 is a deficient number, since it is larger than the sum of its proper divisors (2313772337).

6505250511 is a wasteful number, since it uses less digits than its factorization.

6505250511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12822.

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 6505250511 is about 80655.1331968400. The cubic root of 6505250511 is about 1866.7579454975.

Adding to 6505250511 its reverse (1150525056), we get a palindrome (7655775567).

The spelling of 6505250511 in words is "six billion, five hundred five million, two hundred fifty thousand, five hundred eleven".