125116857 has 6 divisors (see below), whose sum is σ = 180724362. Its totient is φ = 83411232.

The previous prime is 125116853. The next prime is 125116861. The reversal of 125116857 is 758611521.

It is an interprime number because it is at equal distance from previous prime (125116853) and next prime (125116861).

It can be written as a sum of positive squares in only one way, i.e., 69405561 + 55711296 = 8331^2 + 7464^2 .

It is not a de Polignac number, because 125116857 - 2² = 125116853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125116853) 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, 6950928 + ... + 6950945.

It is an arithmetic number, because the mean of its divisors is an integer number (30120727).

Almost surely, 2^125116857 is an apocalyptic number.

It is an amenable number.

125116857 is a deficient number, since it is larger than the sum of its proper divisors (55607505).

125116857 is a wasteful number, since it uses less digits than its factorization.

125116857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13901879 (or 13901876 counting only the distinct ones).

The product of its digits is 16800, while the sum is 36.

The square root of 125116857 is about 11185.5646705922. The cubic root of 125116857 is about 500.1557608054.

The spelling of 125116857 in words is "one hundred twenty-five million, one hundred sixteen thousand, eight hundred fifty-seven".