125386281864 has 24 divisors (see below), whose sum is σ = 339587846910. Its totient is φ = 41795427264.

The previous prime is 125386281821. The next prime is 125386281869. The reversal of 125386281864 is 468182683521.

125386281864 is a `hidden beast` number, since 1 + 2 + 5 + 3 + 8 + 628 + 1 + 8 + 6 + 4 = 666.

125386281864 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 97550028900 + 27836252964 = 312330^2 + 166842^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 125386281864.

It is not an unprimeable number, because it can be changed into a prime (125386281869) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 870737997 + ... + 870738140.

Almost surely, 2^125386281864 is an apocalyptic number.

It is an amenable number.

125386281864 is an abundant number, since it is smaller than the sum of its proper divisors (214201565046).

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

125386281864 is a wasteful number, since it uses less digits than its factorization.

125386281864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741476149 (or 1741476142 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The spelling of 125386281864 in words is "one hundred twenty-five billion, three hundred eighty-six million, two hundred eighty-one thousand, eight hundred sixty-four".