252429305 has 4 divisors (see below), whose sum is σ = 302915172. Its totient is φ = 201943440.

The previous prime is 252429293. The next prime is 252429329. The reversal of 252429305 is 503924252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37982569 + 214446736 = 6163^2 + 14644^2 .

It is not a de Polignac number, because 252429305 - 2²⁶ = 185320441 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25242926 + ... + 25242935.

It is an arithmetic number, because the mean of its divisors is an integer number (75728793).

Almost surely, 2^252429305 is an apocalyptic number.

It is an amenable number.

252429305 is a deficient number, since it is larger than the sum of its proper divisors (50485867).

252429305 is an equidigital number, since it uses as much as digits as its factorization.

252429305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50485866.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 252429305 is about 15888.0239488742. The cubic root of 252429305 is about 631.9944394439.

The spelling of 252429305 in words is "two hundred fifty-two million, four hundred twenty-nine thousand, three hundred five".