6525515563 has 12 divisors (see below), whose sum is σ = 7603570632. Its totient is φ = 5583967200.

The previous prime is 6525515551. The next prime is 6525515567. The reversal of 6525515563 is 3655155256.

It is not a de Polignac number, because 6525515563 - 2²¹ = 6523418411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6525515567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81345 + ... + 140242.

It is an arithmetic number, because the mean of its divisors is an integer number (633630886).

Almost surely, 2^6525515563 is an apocalyptic number.

6525515563 is a deficient number, since it is larger than the sum of its proper divisors (1078055069).

6525515563 is a wasteful number, since it uses less digits than its factorization.

6525515563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222202 (or 222195 counting only the distinct ones).

The product of its digits is 675000, while the sum is 43.

The square root of 6525515563 is about 80780.6632988366. The cubic root of 6525515563 is about 1868.6943675821.

The spelling of 6525515563 in words is "six billion, five hundred twenty-five million, five hundred fifteen thousand, five hundred sixty-three".