125777155544 has 8 divisors (see below), whose sum is σ = 235832166660. Its totient is φ = 62888577768.

The previous prime is 125777155523. The next prime is 125777155619. The reversal of 125777155544 is 445551777521.

125777155544 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7861072214 + ... + 7861072229.

Almost surely, 2^125777155544 is an apocalyptic number.

It is an amenable number.

125777155544 is a deficient number, since it is larger than the sum of its proper divisors (110055011116).

125777155544 is a wasteful number, since it uses less digits than its factorization.

125777155544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15722144449 (or 15722144445 counting only the distinct ones).

The product of its digits is 6860000, while the sum is 53.

The spelling of 125777155544 in words is "one hundred twenty-five billion, seven hundred seventy-seven million, one hundred fifty-five thousand, five hundred forty-four".