56652025666 has 16 divisors (see below), whose sum is σ = 90011269656. Its totient is φ = 26649547776.

The previous prime is 56652025657. The next prime is 56652025691. The reversal of 56652025666 is 66652025665.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 56270956225 + 381069441 = 237215^2 + 19521^2 .

It is a super-2 number, since 2×56652025666² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 229371 + ... + 407326.

Almost surely, 2^56652025666 is an apocalyptic number.

56652025666 is a deficient number, since it is larger than the sum of its proper divisors (33359243990).

56652025666 is a wasteful number, since it uses less digits than its factorization.

56652025666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639333.

The product of its (nonzero) digits is 3888000, while the sum is 49.

Subtracting 56652025666 from its reverse (66652025665), we obtain a palindrome (9999999999).

The spelling of 56652025666 in words is "fifty-six billion, six hundred fifty-two million, twenty-five thousand, six hundred sixty-six".