7301725221 has 16 divisors (see below), whose sum is σ = 11133517824. Its totient is φ = 4169759664.

The previous prime is 7301725201. The next prime is 7301725243. The reversal of 7301725221 is 1225271037.

It is not a de Polignac number, because 7301725221 - 2⁶ = 7301725157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7301725201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76581 + ... + 143066.

It is an arithmetic number, because the mean of its divisors is an integer number (695844864).

Almost surely, 2^7301725221 is an apocalyptic number.

It is an amenable number.

7301725221 is a deficient number, since it is larger than the sum of its proper divisors (3831792603).

7301725221 is a wasteful number, since it uses less digits than its factorization.

7301725221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221240.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 7301725221 is about 85450.1329489896. The cubic root of 7301725221 is about 1940.0302206827.

Adding to 7301725221 its reverse (1225271037), we get a palindrome (8526996258).

The spelling of 7301725221 in words is "seven billion, three hundred one million, seven hundred twenty-five thousand, two hundred twenty-one".