7221425076 has 240 divisors, whose sum is σ = 20815872000. Its totient is φ = 2174402880.

The previous prime is 7221425051. The next prime is 7221425077. The reversal of 7221425076 is 6705241227.

It is a happy number.

7221425076 is a `hidden beast` number, since 7 + 2 + 2 + 142 + 507 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 7221425076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221425077) 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 79 ways as a sum of consecutive naturals, for example, 15075805 + ... + 15076283.

It is an arithmetic number, because the mean of its divisors is an integer number (86732800).

Almost surely, 2^7221425076 is an apocalyptic number.

7221425076 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7221425076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10407936000).

7221425076 is an abundant number, since it is smaller than the sum of its proper divisors (13594446924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7221425076 is a wasteful number, since it uses less digits than its factorization.

7221425076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 7221425076 is about 84978.9684333718. The cubic root of 7221425076 is about 1932.8922135753.

The spelling of 7221425076 in words is "seven billion, two hundred twenty-one million, four hundred twenty-five thousand, seventy-six".