6565257655 has 96 divisors (see below), whose sum is σ = 9632286720. Its totient is φ = 4250400000.

The previous prime is 6565257637. The next prime is 6565257667. The reversal of 6565257655 is 5567525656.

It is not a de Polignac number, because 6565257655 - 2¹³ = 6565249463 is a prime.

Its product of digits (9450000) is a multiple of the sum of its prime divisors (350).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 26156280 + ... + 26156530.

It is an arithmetic number, because the mean of its divisors is an integer number (100336320).

Almost surely, 2^6565257655 is an apocalyptic number.

6565257655 is a deficient number, since it is larger than the sum of its proper divisors (3067029065).

6565257655 is a wasteful number, since it uses less digits than its factorization.

6565257655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 350 counting only the distinct ones).

The product of its digits is 9450000, while the sum is 52.

The square root of 6565257655 is about 81026.2775585797. The cubic root of 6565257655 is about 1872.4803042249.

The spelling of 6565257655 in words is "six billion, five hundred sixty-five million, two hundred fifty-seven thousand, six hundred fifty-five".