664558125255 has 24 divisors (see below), whose sum is σ = 1152784889568. Its totient is φ = 354158957376.

The previous prime is 664558125241. The next prime is 664558125271. The reversal of 664558125255 is 552521855466.

664558125255 is a `hidden beast` number, since 6 + 6 + 4 + 5 + 581 + 2 + 5 + 2 + 55 = 666.

It is not a de Polignac number, because 664558125255 - 2¹⁰ = 664558124231 is a prime.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 5608272 + ... + 5725541.

It is an arithmetic number, because the mean of its divisors is an integer number (48032703732).

Almost surely, 2^664558125255 is an apocalyptic number.

664558125255 is a deficient number, since it is larger than the sum of its proper divisors (488226764313).

664558125255 is a wasteful number, since it uses less digits than its factorization.

664558125255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11335127 (or 11335124 counting only the distinct ones).

The product of its digits is 14400000, while the sum is 54.

The spelling of 664558125255 in words is "six hundred sixty-four billion, five hundred fifty-eight million, one hundred twenty-five thousand, two hundred fifty-five".