665425005052 has 72 divisors (see below), whose sum is σ = 1301445987408. Its totient is φ = 297245952000.

The previous prime is 665425005017. The next prime is 665425005059. The reversal of 665425005052 is 250500524566.

It is a junction number, because it is equal to n+sod(n) for n = 665425004996 and 665425005014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665425005059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1563927 + ... + 1943377.

It is an arithmetic number, because the mean of its divisors is an integer number (18075638714).

Almost surely, 2^665425005052 is an apocalyptic number.

It is an amenable number.

665425005052 is a deficient number, since it is larger than the sum of its proper divisors (636020982356).

665425005052 is a wasteful number, since it uses less digits than its factorization.

665425005052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379567 (or 379548 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 665425005052 in words is "six hundred sixty-five billion, four hundred twenty-five million, five thousand, fifty-two".