63888188125 has 10 divisors (see below), whose sum is σ = 79834680662. Its totient is φ = 51110550000.

The previous prime is 63888188099. The next prime is 63888188129. The reversal of 63888188125 is 52188188836.

It can be written as a sum of positive squares in 5 ways, for example, as 27980591076 + 35907597049 = 167274^2 + 189493^2 .

It is not a de Polignac number, because 63888188125 - 2¹³ = 63888179933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63888188125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63888188129) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 51109926 + ... + 51111175.

Almost surely, 2^63888188125 is an apocalyptic number.

It is an amenable number.

63888188125 is a deficient number, since it is larger than the sum of its proper divisors (15946492537).

63888188125 is an equidigital number, since it uses as much as digits as its factorization.

63888188125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102221121 (or 102221106 counting only the distinct ones).

The product of its digits is 5898240, while the sum is 58.

The spelling of 63888188125 in words is "sixty-three billion, eight hundred eighty-eight million, one hundred eighty-eight thousand, one hundred twenty-five".