129137651625 has 32 divisors (see below), whose sum is σ = 214908220800. Its totient is φ = 68865988800.

The previous prime is 129137651603. The next prime is 129137651627. The reversal of 129137651625 is 526156731921.

It is not a de Polignac number, because 129137651625 - 2⁵ = 129137651593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129137651627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6762591 + ... + 6781659.

It is an arithmetic number, because the mean of its divisors is an integer number (6715881900).

Almost surely, 2^129137651625 is an apocalyptic number.

129137651625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129137651625 is a deficient number, since it is larger than the sum of its proper divisors (85770569175).

129137651625 is a wasteful number, since it uses less digits than its factorization.

129137651625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37146 (or 37136 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The spelling of 129137651625 in words is "one hundred twenty-nine billion, one hundred thirty-seven million, six hundred fifty-one thousand, six hundred twenty-five".