253220265 has 24 divisors (see below), whose sum is σ = 439325640. Its totient is φ = 134924544.

The previous prime is 253220237. The next prime is 253220299. The reversal of 253220265 is 562022352.

It can be written as a sum of positive squares in 4 ways, for example, as 107993664 + 145226601 = 10392^2 + 12051^2 .

It is not a de Polignac number, because 253220265 - 2¹² = 253216169 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, 65301 + ... + 69069.

It is an arithmetic number, because the mean of its divisors is an integer number (18305235).

Almost surely, 2^253220265 is an apocalyptic number.

It is an amenable number.

253220265 is a deficient number, since it is larger than the sum of its proper divisors (186105375).

253220265 is a wasteful number, since it uses less digits than its factorization.

253220265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5273 (or 5270 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 253220265 is about 15912.8961851701. The cubic root of 253220265 is about 632.6538466652.

The spelling of 253220265 in words is "two hundred fifty-three million, two hundred twenty thousand, two hundred sixty-five".