129625547 has 2 divisors, whose sum is σ = 129625548. Its totient is φ = 129625546.

The previous prime is 129625523. The next prime is 129625579. The reversal of 129625547 is 745526921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129625547 - 2¹² = 129621451 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129625247) 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, 64812773 + 64812774.

It is an arithmetic number, because the mean of its divisors is an integer number (64812774).

Almost surely, 2^129625547 is an apocalyptic number.

129625547 is a deficient number, since it is larger than the sum of its proper divisors (1).

129625547 is an equidigital number, since it uses as much as digits as its factorization.

129625547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 129625547 is about 11385.3215589196. The cubic root of 129625547 is about 506.0928488086.

The spelling of 129625547 in words is "one hundred twenty-nine million, six hundred twenty-five thousand, five hundred forty-seven".