125230709 has 2 divisors, whose sum is σ = 125230710. Its totient is φ = 125230708.

The previous prime is 125230673. The next prime is 125230739. The reversal of 125230709 is 907032521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124322500 + 908209 = 11150^2 + 953^2 .

It is an emirp because it is prime and its reverse (907032521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125230709 - 2⁸ = 125230453 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125230739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62615354 + 62615355.

It is an arithmetic number, because the mean of its divisors is an integer number (62615355).

Almost surely, 2^125230709 is an apocalyptic number.

It is an amenable number.

125230709 is a deficient number, since it is larger than the sum of its proper divisors (1).

125230709 is an equidigital number, since it uses as much as digits as its factorization.

125230709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 125230709 is about 11190.6527512920. The cubic root of 125230709 is about 500.3074229435.

The spelling of 125230709 in words is "one hundred twenty-five million, two hundred thirty thousand, seven hundred nine".