249265 has 4 divisors (see below), whose sum is σ = 299124. Its totient is φ = 199408.

The previous prime is 249257. The next prime is 249287. The reversal of 249265 is 562942.

249265 is nontrivially palindromic in base 7.

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 63504 + 185761 = 252^2 + 431^2 .

It is a cyclic number.

It is not a de Polignac number, because 249265 - 2³ = 249257 is a prime.

It is a Duffinian number.

249265 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24922 + ... + 24931.

It is an arithmetic number, because the mean of its divisors is an integer number (74781).

2²⁴⁹²⁶⁵ is an apocalyptic number.

It is an amenable number.

249265 is a deficient number, since it is larger than the sum of its proper divisors (49859).

249265 is an equidigital number, since it uses as much as digits as its factorization.

249265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49858.

The product of its digits is 4320, while the sum is 28.

The square root of 249265 is about 499.2644589794. The cubic root of 249265 is about 62.9342557629.

The spelling of 249265 in words is "two hundred forty-nine thousand, two hundred sixty-five".