7900721464325 has 6 divisors (see below), whose sum is σ = 9796894615794. Its totient is φ = 6320577171440.

The previous prime is 7900721464319. The next prime is 7900721464373. The reversal of 7900721464325 is 5234641270097.

It can be written as a sum of positive squares in 3 ways, for example, as 119202724 + 7900602261601 = 10918^2 + 2810801^2 .

It is not a de Polignac number, because 7900721464325 - 2¹⁶ = 7900721398789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158014429262 + ... + 158014429311.

It is an arithmetic number, because the mean of its divisors is an integer number (1632815769299).

Almost surely, 2^{7900721464325} is an apocalyptic number.

It is an amenable number.

7900721464325 is a deficient number, since it is larger than the sum of its proper divisors (1896173151469).

7900721464325 is a wasteful number, since it uses less digits than its factorization.

7900721464325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316028858583 (or 316028858578 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 7900721464325 in words is "seven trillion, nine hundred billion, seven hundred twenty-one million, four hundred sixty-four thousand, three hundred twenty-five".