125000789 has 2 divisors, whose sum is σ = 125000790. Its totient is φ = 125000788.

The previous prime is 125000741. The next prime is 125000801. The reversal of 125000789 is 987000521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70728100 + 54272689 = 8410^2 + 7367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125000789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125000089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62500394 + 62500395.

It is an arithmetic number, because the mean of its divisors is an integer number (62500395).

Almost surely, 2^125000789 is an apocalyptic number.

It is an amenable number.

125000789 is a deficient number, since it is larger than the sum of its proper divisors (1).

125000789 is an equidigital number, since it uses as much as digits as its factorization.

125000789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 125000789 is about 11180.3751725960. The cubic root of 125000789 is about 500.0010519978.

The spelling of 125000789 in words is "one hundred twenty-five million, seven hundred eighty-nine", and thus it is an aban number.