6722315251 has 4 divisors (see below), whose sum is σ = 6742263112. Its totient is φ = 6702367392.

The previous prime is 6722315239. The next prime is 6722315263. The reversal of 6722315251 is 1525132276.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6722315239) and next prime (6722315263).

It is a cyclic number.

It is not a de Polignac number, because 6722315251 - 2⁷ = 6722315123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6722315231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9973425 + ... + 9974098.

It is an arithmetic number, because the mean of its divisors is an integer number (1685565778).

Almost surely, 2^6722315251 is an apocalyptic number.

6722315251 is a deficient number, since it is larger than the sum of its proper divisors (19947861).

6722315251 is a wasteful number, since it uses less digits than its factorization.

6722315251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19947860.

The product of its digits is 25200, while the sum is 34.

The square root of 6722315251 is about 81989.7264966776. The cubic root of 6722315251 is about 1887.2942864034.

The spelling of 6722315251 in words is "six billion, seven hundred twenty-two million, three hundred fifteen thousand, two hundred fifty-one".