6722257225 has 24 divisors (see below), whose sum is σ = 8417193408. Its totient is φ = 5325403200.

The previous prime is 6722257211. The next prime is 6722257231. The reversal of 6722257225 is 5227522276.

It is a de Polignac number, because none of the positive numbers 2^k-6722257225 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1217922 + ... + 1223428.

It is an arithmetic number, because the mean of its divisors is an integer number (350716392).

Almost surely, 2^6722257225 is an apocalyptic number.

It is an amenable number.

6722257225 is a deficient number, since it is larger than the sum of its proper divisors (1694936183).

6722257225 is a wasteful number, since it uses less digits than its factorization.

6722257225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5985 (or 5980 counting only the distinct ones).

The product of its digits is 235200, while the sum is 40.

The square root of 6722257225 is about 81989.3726345067. The cubic root of 6722257225 is about 1887.2888561089.

The spelling of 6722257225 in words is "six billion, seven hundred twenty-two million, two hundred fifty-seven thousand, two hundred twenty-five".