64125248895 has 24 divisors (see below), whose sum is σ = 114154500096. Its totient is φ = 33275803968.

The previous prime is 64125248893. The next prime is 64125248947. The reversal of 64125248895 is 59884252146.

64125248895 is a `hidden beast` number, since 64 + 12 + 5 + 2 + 488 + 95 = 666.

It is not a de Polignac number, because 64125248895 - 2¹ = 64125248893 is a prime.

It is a super-2 number, since 2×64125248895² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64125248893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19255167 + ... + 19258496.

It is an arithmetic number, because the mean of its divisors is an integer number (4756437504).

Almost surely, 2^64125248895 is an apocalyptic number.

64125248895 is a deficient number, since it is larger than the sum of its proper divisors (50029251201).

64125248895 is a wasteful number, since it uses less digits than its factorization.

64125248895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38513711 (or 38513708 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The spelling of 64125248895 in words is "sixty-four billion, one hundred twenty-five million, two hundred forty-eight thousand, eight hundred ninety-five".