65665025752 has 32 divisors (see below), whose sum is σ = 125616379680. Its totient is φ = 32171420160.

The previous prime is 65665025731. The next prime is 65665025837. The reversal of 65665025752 is 25752056656.

It is a junction number, because it is equal to n+sod(n) for n = 65665025696 and 65665025705.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 127473 + ... + 384160.

It is an arithmetic number, because the mean of its divisors is an integer number (3925511865).

Almost surely, 2^65665025752 is an apocalyptic number.

It is an amenable number.

65665025752 is a deficient number, since it is larger than the sum of its proper divisors (59951353928).

65665025752 is a wasteful number, since it uses less digits than its factorization.

65665025752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511963 (or 511959 counting only the distinct ones).

The product of its (nonzero) digits is 3780000, while the sum is 49.

The spelling of 65665025752 in words is "sixty-five billion, six hundred sixty-five million, twenty-five thousand, seven hundred fifty-two".