253412305 has 4 divisors (see below), whose sum is σ = 304094772. Its totient is φ = 202729840.

The previous prime is 253412279. The next prime is 253412309. The reversal of 253412305 is 503214352.

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 165071104 + 88341201 = 12848^2 + 9399^2 .

It is not a de Polignac number, because 253412305 - 2⁹ = 253411793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253412305.

It is not an unprimeable number, because it can be changed into a prime (253412309) 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, 25341226 + ... + 25341235.

It is an arithmetic number, because the mean of its divisors is an integer number (76023693).

Almost surely, 2^253412305 is an apocalyptic number.

It is an amenable number.

253412305 is a deficient number, since it is larger than the sum of its proper divisors (50682467).

253412305 is an equidigital number, since it uses as much as digits as its factorization.

253412305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50682466.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 253412305 is about 15918.9291411200. The cubic root of 253412305 is about 632.8137392711.

Adding to 253412305 its reverse (503214352), we get a palindrome (756626657).

The spelling of 253412305 in words is "two hundred fifty-three million, four hundred twelve thousand, three hundred five".