7225666560 has 880 divisors, whose sum is σ = 31386896640. Its totient is φ = 1552711680.

The previous prime is 7225666537. The next prime is 7225666561. The reversal of 7225666560 is 656665227.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (7225666561) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 55157695 + ... + 55157825.

It is an arithmetic number, because the mean of its divisors is an integer number (35666928).

Almost surely, 2^7225666560 is an apocalyptic number.

7225666560 is a gapful number since it is divisible by the number (70) 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 7225666560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15693448320).

7225666560 is an abundant number, since it is smaller than the sum of its proper divisors (24161230080).

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

7225666560 is a wasteful number, since it uses less digits than its factorization.

7225666560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The square root of 7225666560 is about 85003.9208507466. The cubic root of 7225666560 is about 1933.2705658047.

The spelling of 7225666560 in words is "seven billion, two hundred twenty-five million, six hundred sixty-six thousand, five hundred sixty".