252305 has 4 divisors (see below), whose sum is σ = 302772. Its totient is φ = 201840.

The previous prime is 252293. The next prime is 252313. The reversal of 252305 is 503252.

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 150544 + 101761 = 388^2 + 319^2 .

It is not a de Polignac number, because 252305 - 2⁴ = 252289 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25226 + ... + 25235.

It is an arithmetic number, because the mean of its divisors is an integer number (75693).

2²⁵²³⁰⁵ is an apocalyptic number.

It is an amenable number.

252305 is a deficient number, since it is larger than the sum of its proper divisors (50467).

252305 is an equidigital number, since it uses as much as digits as its factorization.

252305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50466.

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 252305 is about 502.2997113278. The cubic root of 252305 is about 63.1890683705.

Adding to 252305 its reverse (503252), we get a palindrome (755557).

The spelling of 252305 in words is "two hundred fifty-two thousand, three hundred five".