129383425 has 6 divisors (see below), whose sum is σ = 160435478. Its totient is φ = 103506720.

The previous prime is 129383411. The next prime is 129383453. The reversal of 129383425 is 524383921.

It can be written as a sum of positive squares in 3 ways, for example, as 1874161 + 127509264 = 1369^2 + 11292^2 .

It is not a de Polignac number, because 129383425 - 2⁵ = 129383393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2587644 + ... + 2587693.

Almost surely, 2^129383425 is an apocalyptic number.

It is an amenable number.

129383425 is a deficient number, since it is larger than the sum of its proper divisors (31052053).

129383425 is an equidigital number, since it uses as much as digits as its factorization.

129383425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5175347 (or 5175342 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 129383425 is about 11374.6835120807. The cubic root of 129383425 is about 505.7775493731. Note that the first 3 decimals are identical.

The spelling of 129383425 in words is "one hundred twenty-nine million, three hundred eighty-three thousand, four hundred twenty-five".