7225552656 has 120 divisors (see below), whose sum is σ = 23128769664. Its totient is φ = 2062794240.

The previous prime is 7225552597. The next prime is 7225552657. The reversal of 7225552656 is 6562555227.

7225552656 is a `hidden beast` number, since 7 + 22 + 55 + 526 + 56 = 666.

It is a super-2 number, since 2×7225552656² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7225552657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1859836 + ... + 1863716.

Almost surely, 2^7225552656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7225552656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11564384832).

7225552656 is an abundant number, since it is smaller than the sum of its proper divisors (15903217008).

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

7225552656 is a wasteful number, since it uses less digits than its factorization.

7225552656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5749 (or 5740 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 45.

The square root of 7225552656 is about 85003.2508554820. The cubic root of 7225552656 is about 1933.2604071845.

The spelling of 7225552656 in words is "seven billion, two hundred twenty-five million, five hundred fifty-two thousand, six hundred fifty-six".