129513157625 has 16 divisors (see below), whose sum is σ = 161969932800. Its totient is φ = 103394172400.

The previous prime is 129513157621. The next prime is 129513157633. The reversal of 129513157625 is 526751315921.

It is not a de Polignac number, because 129513157625 - 2² = 129513157621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129513157625.

It is not an unprimeable number, because it can be changed into a prime (129513157621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1021655 + ... + 1141404.

It is an arithmetic number, because the mean of its divisors is an integer number (10123120800).

Almost surely, 2^129513157625 is an apocalyptic number.

It is an amenable number.

129513157625 is a deficient number, since it is larger than the sum of its proper divisors (32456775175).

129513157625 is an equidigital number, since it uses as much as digits as its factorization.

129513157625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163553 (or 2163543 counting only the distinct ones).

The product of its digits is 567000, while the sum is 47.

The spelling of 129513157625 in words is "one hundred twenty-nine billion, five hundred thirteen million, one hundred fifty-seven thousand, six hundred twenty-five".