129078937625 has 64 divisors (see below), whose sum is σ = 181939350528. Its totient is φ = 90616320000.

The previous prime is 129078937591. The next prime is 129078937639. The reversal of 129078937625 is 526739870921.

It is not a de Polignac number, because 129078937625 - 2¹⁶ = 129078872089 is a prime.

It is a super-2 number, since 2×129078937625² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4703945 + ... + 4731305.

It is an arithmetic number, because the mean of its divisors is an integer number (2842802352).

Almost surely, 2^129078937625 is an apocalyptic number.

It is an amenable number.

129078937625 is a deficient number, since it is larger than the sum of its proper divisors (52860412903).

129078937625 is a wasteful number, since it uses less digits than its factorization.

129078937625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27507 (or 27497 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 59.

The spelling of 129078937625 in words is "one hundred twenty-nine billion, seventy-eight million, nine hundred thirty-seven thousand, six hundred twenty-five".