125247122018 has 18 divisors (see below), whose sum is σ = 188811533313. Its totient is φ = 62311503000.

The previous prime is 125247122009. The next prime is 125247122041. The reversal of 125247122018 is 810221742521.

It can be written as a sum of positive squares in 2 ways, for example, as 105980849209 + 19266272809 = 325547^2 + 138803^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=250247.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian 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 in 8 ways as a sum of consecutive naturals, for example, 125623496 + ... + 125624492.

Almost surely, 2^125247122018 is an apocalyptic number.

125247122018 is a deficient number, since it is larger than the sum of its proper divisors (63564411295).

125247122018 is an frugal number, since it uses more digits than its factorization.

125247122018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498 (or 1250 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

Adding to 125247122018 its reverse (810221742521), we get a palindrome (935468864539).

The spelling of 125247122018 in words is "one hundred twenty-five billion, two hundred forty-seven million, one hundred twenty-two thousand, eighteen".