488515725721 has 3 divisors (see below), whose sum is σ = 488516424661. Its totient is φ = 488515026782.

The previous prime is 488515725671. The next prime is 488515725757. The reversal of 488515725721 is 127527515884.

The square root of 488515725721 is 698939.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 488515725721 - 2²³ = 488507337113 is a prime.

It is a super-2 number, since 2×488515725721² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (488515225721) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 349470 + ... + 1048408.

Almost surely, 2^488515725721 is an apocalyptic number.

488515725721 is the 698939-th square number.

488515725721 is the 349470-th centered octagonal number.

It is an amenable number.

488515725721 is a deficient number, since it is larger than the sum of its proper divisors (698940).

488515725721 is an frugal number, since it uses more digits than its factorization.

488515725721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397878 (or 698939 counting only the distinct ones).

The product of its digits is 6272000, while the sum is 55.

The spelling of 488515725721 in words is "four hundred eighty-eight billion, five hundred fifteen million, seven hundred twenty-five thousand, seven hundred twenty-one".