65525345566 has 16 divisors (see below), whose sum is σ = 99546912000. Its totient is φ = 32343164568.

The previous prime is 65525345551. The next prime is 65525345569. The reversal of 65525345566 is 66554352556.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65525345569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1193385 + ... + 1247083.

It is an arithmetic number, because the mean of its divisors is an integer number (6221682000).

Almost surely, 2^65525345566 is an apocalyptic number.

65525345566 is a deficient number, since it is larger than the sum of its proper divisors (34021566434).

65525345566 is a wasteful number, since it uses less digits than its factorization.

65525345566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61503.

The product of its digits is 16200000, while the sum is 52.

The spelling of 65525345566 in words is "sixty-five billion, five hundred twenty-five million, three hundred forty-five thousand, five hundred sixty-six".