253918255 has 4 divisors (see below), whose sum is σ = 304701912. Its totient is φ = 203134600.

The previous prime is 253918253. The next prime is 253918267. The reversal of 253918255 is 552819352.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 253918255 - 2¹ = 253918253 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253918253) 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, 25391821 + ... + 25391830.

It is an arithmetic number, because the mean of its divisors is an integer number (76175478).

Almost surely, 2^253918255 is an apocalyptic number.

253918255 is a deficient number, since it is larger than the sum of its proper divisors (50783657).

253918255 is an equidigital number, since it uses as much as digits as its factorization.

253918255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50783656.

The product of its digits is 108000, while the sum is 40.

The square root of 253918255 is about 15934.8126753972. The cubic root of 253918255 is about 633.2346071102.

The spelling of 253918255 in words is "two hundred fifty-three million, nine hundred eighteen thousand, two hundred fifty-five".