125516429 has 2 divisors, whose sum is σ = 125516430. Its totient is φ = 125516428.

The previous prime is 125516387. The next prime is 125516459. The reversal of 125516429 is 924615521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105472900 + 20043529 = 10270^2 + 4477^2 .

It is an emirp because it is prime and its reverse (924615521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125516429 - 2¹² = 125512333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125516459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62758214 + 62758215.

It is an arithmetic number, because the mean of its divisors is an integer number (62758215).

Almost surely, 2^125516429 is an apocalyptic number.

It is an amenable number.

125516429 is a deficient number, since it is larger than the sum of its proper divisors (1).

125516429 is an equidigital number, since it uses as much as digits as its factorization.

125516429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 35.

The square root of 125516429 is about 11203.4114893634. The cubic root of 125516429 is about 500.6876259077.

The spelling of 125516429 in words is "one hundred twenty-five million, five hundred sixteen thousand, four hundred twenty-nine".