125729497 has 2 divisors, whose sum is σ = 125729498. Its totient is φ = 125729496.

The previous prime is 125729489. The next prime is 125729507. The reversal of 125729497 is 794927521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83466496 + 42263001 = 9136^2 + 6501^2 .

It is an emirp because it is prime and its reverse (794927521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125729497 - 2³ = 125729489 is a prime.

It is not a weakly prime, because it can be changed into another prime (125729447) 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, 62864748 + 62864749.

It is an arithmetic number, because the mean of its divisors is an integer number (62864749).

Almost surely, 2^125729497 is an apocalyptic number.

It is an amenable number.

125729497 is a deficient number, since it is larger than the sum of its proper divisors (1).

125729497 is an equidigital number, since it uses as much as digits as its factorization.

125729497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 46.

The square root of 125729497 is about 11212.9165251508. The cubic root of 125729497 is about 500.9707766323.

The spelling of 125729497 in words is "one hundred twenty-five million, seven hundred twenty-nine thousand, four hundred ninety-seven".