129025617907 has 2 divisors, whose sum is σ = 129025617908. Its totient is φ = 129025617906.

The previous prime is 129025617899. The next prime is 129025617923. The reversal of 129025617907 is 709716520921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129025617907 - 2³ = 129025617899 is a prime.

It is a super-2 number, since 2×129025617907² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (129025615907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64512808953 + 64512808954.

It is an arithmetic number, because the mean of its divisors is an integer number (64512808954).

Almost surely, 2^129025617907 is an apocalyptic number.

129025617907 is a deficient number, since it is larger than the sum of its proper divisors (1).

129025617907 is an equidigital number, since it uses as much as digits as its factorization.

129025617907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 49.

The spelling of 129025617907 in words is "one hundred twenty-nine billion, twenty-five million, six hundred seventeen thousand, nine hundred seven".