129252275 has 24 divisors (see below), whose sum is σ = 175569120. Its totient is φ = 93954560.

The previous prime is 129252257. The next prime is 129252287. The reversal of 129252275 is 572252921.

It is not a de Polignac number, because 129252275 - 2¹⁰ = 129251251 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 7082 + ... + 17568.

It is an arithmetic number, because the mean of its divisors is an integer number (7315380).

Almost surely, 2^129252275 is an apocalyptic number.

129252275 is a deficient number, since it is larger than the sum of its proper divisors (46316845).

129252275 is a wasteful number, since it uses less digits than its factorization.

129252275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10543 (or 10538 counting only the distinct ones).

The product of its digits is 25200, while the sum is 35.

The square root of 129252275 is about 11368.9170548474. The cubic root of 129252275 is about 505.6065971535.

The spelling of 129252275 in words is "one hundred twenty-nine million, two hundred fifty-two thousand, two hundred seventy-five".