125868851 has 2 divisors, whose sum is σ = 125868852. Its totient is φ = 125868850.

The previous prime is 125868839. The next prime is 125868877. The reversal of 125868851 is 158868521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125868851 - 2¹⁸ = 125606707 is a prime.

It is not a weakly prime, because it can be changed into another prime (125868451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62934425 + 62934426.

It is an arithmetic number, because the mean of its divisors is an integer number (62934426).

Almost surely, 2^125868851 is an apocalyptic number.

125868851 is a deficient number, since it is larger than the sum of its proper divisors (1).

125868851 is an equidigital number, since it uses as much as digits as its factorization.

125868851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153600, while the sum is 44.

The square root of 125868851 is about 11219.1287986189. The cubic root of 125868851 is about 501.1557942208.

The spelling of 125868851 in words is "one hundred twenty-five million, eight hundred sixty-eight thousand, eight hundred fifty-one".