665225563504530 has 32 divisors (see below), whose sum is σ = 1824618688470144. Its totient is φ = 152051557372416.

The previous prime is 665225563504529. The next prime is 665225563504549. The reversal of 665225563504530 is 35405365522566.

665225563504530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1583870389087 + ... + 1583870389506.

It is an arithmetic number, because the mean of its divisors is an integer number (57019334014692).

Almost surely, 2^{665225563504530} is an apocalyptic number.

665225563504530 is an abundant number, since it is smaller than the sum of its proper divisors (1159393124965614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665225563504530 is a wasteful number, since it uses less digits than its factorization.

665225563504530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167740778610.

The product of its (nonzero) digits is 97200000, while the sum is 57.

The spelling of 665225563504530 in words is "six hundred sixty-five trillion, two hundred twenty-five billion, five hundred sixty-three million, five hundred four thousand, five hundred thirty".