721181341063325 has 24 divisors (see below), whose sum is σ = 894859355993376. Its totient is φ = 576561655800000.

The previous prime is 721181341063307. The next prime is 721181341063331. The reversal of 721181341063325 is 523360143181127.

It is not a de Polignac number, because 721181341063325 - 2¹² = 721181341059229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 721181341063325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226230995 + ... + 229396655.

It is an arithmetic number, because the mean of its divisors is an integer number (37285806499724).

Almost surely, 2^{721181341063325} is an apocalyptic number.

It is an amenable number.

721181341063325 is a deficient number, since it is larger than the sum of its proper divisors (173678014930051).

721181341063325 is a wasteful number, since it uses less digits than its factorization.

721181341063325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171725 (or 3171720 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 721181341063325 in words is "seven hundred twenty-one trillion, one hundred eighty-one billion, three hundred forty-one million, sixty-three thousand, three hundred twenty-five".