8129910625 has 20 divisors (see below), whose sum is σ = 10600856640. Its totient is φ = 6221138000.

The previous prime is 8129910617. The next prime is 8129910653. The reversal of 8129910625 is 5260199218.

It is not a de Polignac number, because 8129910625 - 2³ = 8129910617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 268405 + ... + 297154.

It is an arithmetic number, because the mean of its divisors is an integer number (530042832).

Almost surely, 2^8129910625 is an apocalyptic number.

It is an amenable number.

8129910625 is a deficient number, since it is larger than the sum of its proper divisors (2470946015).

8129910625 is an equidigital number, since it uses as much as digits as its factorization.

8129910625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565602 (or 565587 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 8129910625 is about 90166.0170186085. The cubic root of 8129910625 is about 2010.7678085263.

The spelling of 8129910625 in words is "eight billion, one hundred twenty-nine million, nine hundred ten thousand, six hundred twenty-five".