252305069 has 8 divisors (see below), whose sum is σ = 258145272. Its totient is φ = 246504960.

The previous prime is 252305059. The next prime is 252305077. The reversal of 252305069 is 960503252.

It can be written as a sum of positive squares in 4 ways, for example, as 63792169 + 188512900 = 7987^2 + 13730^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252305069 is a prime.

It is a super-2 number, since 2×252305069² = 127315695686189522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252305029) 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 7 ways as a sum of consecutive naturals, for example, 2897 + ... + 22649.

It is an arithmetic number, because the mean of its divisors is an integer number (32268159).

Almost surely, 2^252305069 is an apocalyptic number.

It is an amenable number.

252305069 is a deficient number, since it is larger than the sum of its proper divisors (5840203).

252305069 is a wasteful number, since it uses less digits than its factorization.

252305069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20047.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 252305069 is about 15884.1137303911. The cubic root of 252305069 is about 631.8907413074.

The spelling of 252305069 in words is "two hundred fifty-two million, three hundred five thousand, sixty-nine".