4825721 has 4 divisors (see below), whose sum is σ = 4835472. Its totient is φ = 4815972.

The previous prime is 4825693. The next prime is 4825759. The reversal of 4825721 is 1275284.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4825721 - 2¹⁰ = 4824697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4825021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4091 + ... + 5136.

It is an arithmetic number, because the mean of its divisors is an integer number (1208868).

Almost surely, 2^4825721 is an apocalyptic number.

It is an amenable number.

4825721 is a deficient number, since it is larger than the sum of its proper divisors (9751).

4825721 is an equidigital number, since it uses as much as digits as its factorization.

4825721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9750.

The product of its digits is 4480, while the sum is 29.

The square root of 4825721 is about 2196.7523756673. The cubic root of 4825721 is about 168.9873010777.

The spelling of 4825721 in words is "four million, eight hundred twenty-five thousand, seven hundred twenty-one".