125183066978 has 18 divisors (see below), whose sum is σ = 194495407041. Its totient is φ = 60426199624.

The previous prime is 125183066971. The next prime is 125183066993. The reversal of 125183066978 is 879660381521.

It can be written as a sum of positive squares in 2 ways, for example, as 125108641849 + 74425129 = 353707^2 + 8627^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=250183.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125183066971) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14506301 + ... + 14514927.

Almost surely, 2^125183066978 is an apocalyptic number.

125183066978 is a deficient number, since it is larger than the sum of its proper divisors (69312340063).

125183066978 is an frugal number, since it uses more digits than its factorization.

125183066978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17314 (or 8658 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 125183066978 in words is "one hundred twenty-five billion, one hundred eighty-three million, sixty-six thousand, nine hundred seventy-eight".