65501725565 has 16 divisors (see below), whose sum is σ = 80898860160. Its totient is φ = 50892219840.

The previous prime is 65501725561. The next prime is 65501725567. The reversal of 65501725565 is 56552710556.

It is not a de Polignac number, because 65501725565 - 2² = 65501725561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65501725561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1353170 + ... + 1400739.

It is an arithmetic number, because the mean of its divisors is an integer number (5056178760).

Almost surely, 2^65501725565 is an apocalyptic number.

It is an amenable number.

65501725565 is a deficient number, since it is larger than the sum of its proper divisors (15397134595).

65501725565 is a wasteful number, since it uses less digits than its factorization.

65501725565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754052.

The product of its (nonzero) digits is 1575000, while the sum is 47.

The spelling of 65501725565 in words is "sixty-five billion, five hundred one million, seven hundred twenty-five thousand, five hundred sixty-five".