4861725921 has 64 divisors (see below), whose sum is σ = 7996800000. Its totient is φ = 2917399680.

The previous prime is 4861725893. The next prime is 4861725929. The reversal of 4861725921 is 1295271684.

4861725921 is a `hidden beast` number, since 4 + 8 + 617 + 2 + 5 + 9 + 21 = 666.

It is not a de Polignac number, because 4861725921 - 2¹⁰ = 4861724897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4861725929) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2431080 + ... + 2433078.

It is an arithmetic number, because the mean of its divisors is an integer number (124950000).

Almost surely, 2^4861725921 is an apocalyptic number.

4861725921 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4861725921 is a deficient number, since it is larger than the sum of its proper divisors (3135074079).

4861725921 is a wasteful number, since it uses less digits than its factorization.

4861725921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088 (or 2056 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 4861725921 is about 69726.0777686512. The cubic root of 4861725921 is about 1694.0653410749.

The spelling of 4861725921 in words is "four billion, eight hundred sixty-one million, seven hundred twenty-five thousand, nine hundred twenty-one".