30525680656 has 45 divisors (see below), whose sum is σ = 61156309053. Its totient is φ = 14760007680.

The previous prime is 30525680651. The next prime is 30525680719. The reversal of 30525680656 is 65608652503.

The square root of 30525680656 is 174716.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 388720656 + 30136960000 = 19716^2 + 173600^2 .

It is a super-3 number, since 3×30525680656³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (30525680651) 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 8 ways as a sum of consecutive naturals, for example, 21664080 + ... + 21665488.

Almost surely, 2^30525680656 is an apocalyptic number.

30525680656 is the 174716-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30525680656

30525680656 is an abundant number, since it is smaller than the sum of its proper divisors (30630628397).

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

30525680656 is an frugal number, since it uses more digits than its factorization.

30525680656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2888 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 30525680656 in words is "thirty billion, five hundred twenty-five million, six hundred eighty thousand, six hundred fifty-six".