721854486325 has 12 divisors (see below), whose sum is σ = 1022970929440. Its totient is φ = 494985933360.

The previous prime is 721854486317. The next prime is 721854486329. The reversal of 721854486325 is 523684458127.

It is a happy number.

It is not a de Polignac number, because 721854486325 - 2³ = 721854486317 is a prime.

It is a super-2 number, since 2×721854486325² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721854486329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2062441215 + ... + 2062441564.

Almost surely, 2^721854486325 is an apocalyptic number.

It is an amenable number.

721854486325 is a deficient number, since it is larger than the sum of its proper divisors (301116443115).

721854486325 is a wasteful number, since it uses less digits than its factorization.

721854486325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4124882796 (or 4124882791 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 55.

The spelling of 721854486325 in words is "seven hundred twenty-one billion, eight hundred fifty-four million, four hundred eighty-six thousand, three hundred twenty-five".