125680889 has 2 divisors, whose sum is σ = 125680890. Its totient is φ = 125680888.

The previous prime is 125680883. The next prime is 125680921. The reversal of 125680889 is 988086521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119530489 + 6150400 = 10933^2 + 2480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125680889 is a prime.

It is not a weakly prime, because it can be changed into another prime (125680883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62840444 + 62840445.

It is an arithmetic number, because the mean of its divisors is an integer number (62840445).

Almost surely, 2^125680889 is an apocalyptic number.

It is an amenable number.

125680889 is a deficient number, since it is larger than the sum of its proper divisors (1).

125680889 is an equidigital number, since it uses as much as digits as its factorization.

125680889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 47.

The square root of 125680889 is about 11210.7488153111. The cubic root of 125680889 is about 500.9062085798.

The spelling of 125680889 in words is "one hundred twenty-five million, six hundred eighty thousand, eight hundred eighty-nine".