721403023825 has 48 divisors (see below), whose sum is σ = 980037273600. Its totient is φ = 522416225600.

The previous prime is 721403023811. The next prime is 721403023853. The reversal of 721403023825 is 528320304127.

It is not a de Polignac number, because 721403023825 - 2¹³ = 721403015633 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70978194 + ... + 70988356.

It is an arithmetic number, because the mean of its divisors is an integer number (20417443200).

Almost surely, 2^721403023825 is an apocalyptic number.

It is an amenable number.

721403023825 is a deficient number, since it is larger than the sum of its proper divisors (258634249775).

721403023825 is a wasteful number, since it uses less digits than its factorization.

721403023825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11262 (or 11257 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

It can be divided in two parts, 72140302 and 3825, that added together give a palindrome (72144127).

The spelling of 721403023825 in words is "seven hundred twenty-one billion, four hundred three million, twenty-three thousand, eight hundred twenty-five".