129282925 has 6 divisors (see below), whose sum is σ = 160310858. Its totient is φ = 103426320.

The previous prime is 129282917. The next prime is 129282949. The reversal of 129282925 is 529282921.

It can be written as a sum of positive squares in 3 ways, for example, as 1976836 + 127306089 = 1406^2 + 11283^2 .

It is not a de Polignac number, because 129282925 - 2³ = 129282917 is a prime.

It is a super-3 number, since 3×129282925³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2585634 + ... + 2585683.

Almost surely, 2^129282925 is an apocalyptic number.

It is an amenable number.

129282925 is a deficient number, since it is larger than the sum of its proper divisors (31027933).

129282925 is an equidigital number, since it uses as much as digits as its factorization.

129282925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5171327 (or 5171322 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 129282925 is about 11370.2649485401. The cubic root of 129282925 is about 505.6465593577.

The spelling of 129282925 in words is "one hundred twenty-nine million, two hundred eighty-two thousand, nine hundred twenty-five".