129825602 has 8 divisors (see below), whose sum is σ = 196666812. Its totient is φ = 64270000.

The previous prime is 129825599. The next prime is 129825607. The reversal of 129825602 is 206528921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 129709321 + 116281 = 11389^2 + 341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (129825607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321149 + ... + 321552.

Almost surely, 2^129825602 is an apocalyptic number.

129825602 is a deficient number, since it is larger than the sum of its proper divisors (66841210).

129825602 is a wasteful number, since it uses less digits than its factorization.

129825602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642804.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 129825602 is about 11394.1038261023. The cubic root of 129825602 is about 506.3530710829.

The spelling of 129825602 in words is "one hundred twenty-nine million, eight hundred twenty-five thousand, six hundred two".