129097785425 has 12 divisors (see below), whose sum is σ = 182950004736. Its totient is φ = 88524195600.

The previous prime is 129097785407. The next prime is 129097785431. The reversal of 129097785425 is 524587790921.

It is not a de Polignac number, because 129097785425 - 2⁸ = 129097785169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 368850641 + ... + 368850990.

It is an arithmetic number, because the mean of its divisors is an integer number (15245833728).

Almost surely, 2^129097785425 is an apocalyptic number.

It is an amenable number.

129097785425 is a deficient number, since it is larger than the sum of its proper divisors (53852219311).

129097785425 is an equidigital number, since it uses as much as digits as its factorization.

129097785425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737701648 (or 737701643 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 59.

The spelling of 129097785425 in words is "one hundred twenty-nine billion, ninety-seven million, seven hundred eighty-five thousand, four hundred twenty-five".