125715859 has 2 divisors, whose sum is σ = 125715860. Its totient is φ = 125715858.

The previous prime is 125715857. The next prime is 125715871. The reversal of 125715859 is 958517521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125715859 - 2¹ = 125715857 is a prime.

Together with 125715857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125715851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62857929 + 62857930.

It is an arithmetic number, because the mean of its divisors is an integer number (62857930).

Almost surely, 2^125715859 is an apocalyptic number.

125715859 is a deficient number, since it is larger than the sum of its proper divisors (1).

125715859 is an equidigital number, since it uses as much as digits as its factorization.

125715859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 43.

The square root of 125715859 is about 11212.3083707147. The cubic root of 125715859 is about 500.9526623826.

The spelling of 125715859 in words is "one hundred twenty-five million, seven hundred fifteen thousand, eight hundred fifty-nine".