125443859 has 2 divisors, whose sum is σ = 125443860. Its totient is φ = 125443858.

The previous prime is 125443841. The next prime is 125443861. The reversal of 125443859 is 958344521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125443859 is a prime.

Together with 125443861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125443819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62721929 + 62721930.

It is an arithmetic number, because the mean of its divisors is an integer number (62721930).

Almost surely, 2^125443859 is an apocalyptic number.

125443859 is a deficient number, since it is larger than the sum of its proper divisors (1).

125443859 is an equidigital number, since it uses as much as digits as its factorization.

125443859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 41.

The square root of 125443859 is about 11200.1722754608. The cubic root of 125443859 is about 500.5911128957.

The spelling of 125443859 in words is "one hundred twenty-five million, four hundred forty-three thousand, eight hundred fifty-nine".