305255253 has 4 divisors (see below), whose sum is σ = 407007008. Its totient is φ = 203503500.

The previous prime is 305255227. The next prime is 305255261. The reversal of 305255253 is 352552503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 352552503 = 3 ⋅117517501.

It is not a de Polignac number, because 305255253 - 2²⁰ = 304206677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 305255253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305255053) 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, 50875873 + ... + 50875878.

It is an arithmetic number, because the mean of its divisors is an integer number (101751752).

Almost surely, 2^305255253 is an apocalyptic number.

It is an amenable number.

305255253 is a deficient number, since it is larger than the sum of its proper divisors (101751755).

305255253 is a wasteful number, since it uses less digits than its factorization.

305255253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101751754.

The product of its (nonzero) digits is 22500, while the sum is 30.

The square root of 305255253 is about 17471.5555403633. Note that the first 4 decimals coincide. The cubic root of 305255253 is about 673.3192775279.

It can be divided in two parts, 30525 and 5253, that added together give a triangular number (35778 = T₂₆₇).

The spelling of 305255253 in words is "three hundred five million, two hundred fifty-five thousand, two hundred fifty-three".