253253305 has 4 divisors (see below), whose sum is σ = 303903972. Its totient is φ = 202602640.

The previous prime is 253253293. The next prime is 253253309. The reversal of 253253305 is 503352352.

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 78907689 + 174345616 = 8883^2 + 13204^2 .

It is not a de Polignac number, because 253253305 - 2⁷ = 253253177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253253309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25325326 + ... + 25325335.

It is an arithmetic number, because the mean of its divisors is an integer number (75975993).

Almost surely, 2^253253305 is an apocalyptic number.

It is an amenable number.

253253305 is a deficient number, since it is larger than the sum of its proper divisors (50650667).

253253305 is an equidigital number, since it uses as much as digits as its factorization.

253253305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50650666.

The product of its (nonzero) digits is 13500, while the sum is 28.

The square root of 253253305 is about 15913.9343029937. The cubic root of 253253305 is about 632.6813615431.

The spelling of 253253305 in words is "two hundred fifty-three million, two hundred fifty-three thousand, three hundred five".