129841225 has 6 divisors (see below), whose sum is σ = 161003150. Its totient is φ = 103872960.

The previous prime is 129841211. The next prime is 129841247. The reversal of 129841225 is 522148921.

It can be written as a sum of positive squares in 3 ways, for example, as 16801801 + 113039424 = 4099^2 + 10632^2 .

It is not a de Polignac number, because 129841225 - 2¹⁹ = 129316937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2596800 + ... + 2596849.

Almost surely, 2^129841225 is an apocalyptic number.

It is an amenable number.

129841225 is a deficient number, since it is larger than the sum of its proper divisors (31161925).

129841225 is an equidigital number, since it uses as much as digits as its factorization.

129841225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5193659 (or 5193654 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 129841225 is about 11394.7893793611. The cubic root of 129841225 is about 506.3733815009.

The spelling of 129841225 in words is "one hundred twenty-nine million, eight hundred forty-one thousand, two hundred twenty-five".