7725505656 has 32 divisors (see below), whose sum is σ = 21069561600. Its totient is φ = 2341062240.

The previous prime is 7725505651. The next prime is 7725505661. The reversal of 7725505656 is 6565055277.

It is an interprime number because it is at equal distance from previous prime (7725505651) and next prime (7725505661).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7725505651) 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 7 ways as a sum of consecutive naturals, for example, 14631376 + ... + 14631903.

It is an arithmetic number, because the mean of its divisors is an integer number (658423800).

Almost surely, 2^7725505656 is an apocalyptic number.

It is an amenable number.

7725505656 is an abundant number, since it is smaller than the sum of its proper divisors (13344055944).

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

7725505656 is a wasteful number, since it uses less digits than its factorization.

7725505656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29263299 (or 29263295 counting only the distinct ones).

The product of its (nonzero) digits is 2205000, while the sum is 48.

The square root of 7725505656 is about 87894.8556856429. The cubic root of 7725505656 is about 1976.8587452093.

The spelling of 7725505656 in words is "seven billion, seven hundred twenty-five million, five hundred five thousand, six hundred fifty-six".