55660605625 has 15 divisors (see below), whose sum is σ = 69560863867. Its totient is φ = 44523766000.

The previous prime is 55660605599. The next prime is 55660605629. The reversal of 55660605625 is 52650606655.

The square root of 55660605625 is 235925.

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

It can be written as a sum of positive squares in 7 ways, for example, as 39357401769 + 16303203856 = 198387^2 + 127684^2 .

It is not a de Polignac number, because 55660605625 - 2⁵ = 55660605593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55660605629) 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 14 ways as a sum of consecutive naturals, for example, 5893407 + ... + 5902843.

Almost surely, 2^55660605625 is an apocalyptic number.

55660605625 is the 235925-th square number.

55660605625 is the 117963-rd centered octagonal number.

It is an amenable number.

55660605625 is a deficient number, since it is larger than the sum of its proper divisors (13900258242).

55660605625 is an frugal number, since it uses more digits than its factorization.

55660605625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18894 (or 9442 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 46.

The spelling of 55660605625 in words is "fifty-five billion, six hundred sixty million, six hundred five thousand, six hundred twenty-five".