72505175552 has 40 divisors (see below), whose sum is σ = 145911103800. Its totient is φ = 35991742464.

The previous prime is 72505175537. The next prime is 72505175557. The reversal of 72505175552 is 25557150527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72505175557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438227 + ... + 580562.

It is an arithmetic number, because the mean of its divisors is an integer number (3647777595).

Almost surely, 2^72505175552 is an apocalyptic number.

It is an amenable number.

72505175552 is an abundant number, since it is smaller than the sum of its proper divisors (73405928248).

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

72505175552 is a wasteful number, since it uses less digits than its factorization.

72505175552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018946 (or 1018930 counting only the distinct ones).

The product of its (nonzero) digits is 612500, while the sum is 44.

The spelling of 72505175552 in words is "seventy-two billion, five hundred five million, one hundred seventy-five thousand, five hundred fifty-two".