125818196544 has 42 divisors (see below), whose sum is σ = 360635144870. Its totient is φ = 41939398656.

The previous prime is 125818196507. The next prime is 125818196611. The reversal of 125818196544 is 445691818521.

125818196544 is a `hidden beast` number, since 1 + 2 + 5 + 8 + 1 + 8 + 1 + 96 + 544 = 666.

It can be written as a sum of positive squares in only one way, i.e., 86013158400 + 39805038144 = 293280^2 + 199512^2 .

It is a super-2 number, since 2×125818196544² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109216609 + ... + 109217760.

Almost surely, 2^125818196544 is an apocalyptic number.

It is an amenable number.

125818196544 is an abundant number, since it is smaller than the sum of its proper divisors (234816948326).

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

125818196544 is a wasteful number, since it uses less digits than its factorization.

125818196544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218434387 (or 218434374 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 54.

The spelling of 125818196544 in words is "one hundred twenty-five billion, eight hundred eighteen million, one hundred ninety-six thousand, five hundred forty-four".