129625511 has 2 divisors, whose sum is σ = 129625512. Its totient is φ = 129625510.

The previous prime is 129625487. The next prime is 129625513. The reversal of 129625511 is 115526921.

It is a strong prime.

It is an emirp because it is prime and its reverse (115526921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129625511 is a prime.

It is a super-2 number, since 2×129625511² = 33605546204022242, which contains 22 as substring.

Together with 129625513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129625513) 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, 64812755 + 64812756.

It is an arithmetic number, because the mean of its divisors is an integer number (64812756).

Almost surely, 2^129625511 is an apocalyptic number.

129625511 is a deficient number, since it is larger than the sum of its proper divisors (1).

129625511 is an equidigital number, since it uses as much as digits as its factorization.

129625511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 32.

The square root of 129625511 is about 11385.3199779365. The cubic root of 129625511 is about 506.0928019574.

The spelling of 129625511 in words is "one hundred twenty-nine million, six hundred twenty-five thousand, five hundred eleven".