55566275625 has 135 divisors (see below), whose sum is σ = 116931156771. Its totient is φ = 25345152000.

The previous prime is 55566275623. The next prime is 55566275627. The reversal of 55566275625 is 52657266555.

The square root of 55566275625 is 235725.

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

55566275625 is a `hidden beast` number, since 5 + 5 + 5 + 6 + 6 + 2 + 7 + 5 + 625 = 666.

It is an interprime number because it is at equal distance from previous prime (55566275623) and next prime (55566275627).

It can be written as a sum of positive squares in 7 ways, for example, as 37139842089 + 18426433536 = 192717^2 + 135744^2 .

It is not a de Polignac number, because 55566275625 - 2¹ = 55566275623 is a prime.

It is a super-2 number, since 2×55566275625² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55566275623) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 123755401 + ... + 123755849.

Almost surely, 2^55566275625 is an apocalyptic number.

55566275625 is the 235725-th square number.

55566275625 is the 117863-rd centered octagonal number.

It is an amenable number.

55566275625 is an abundant number, since it is smaller than the sum of its proper divisors (61364881146).

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

55566275625 is an frugal number, since it uses more digits than its factorization.

55566275625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 464 counting only the distinct ones).

The product of its digits is 18900000, while the sum is 54.

The spelling of 55566275625 in words is "fifty-five billion, five hundred sixty-six million, two hundred seventy-five thousand, six hundred twenty-five".