263144225 has 6 divisors (see below), whose sum is σ = 326298870. Its totient is φ = 210515360.

The previous prime is 263144209. The next prime is 263144251. The reversal of 263144225 is 522441362.

It can be written as a sum of positive squares in 3 ways, for example, as 27920656 + 235223569 = 5284^2 + 15337^2 .

It is not a de Polignac number, because 263144225 - 2⁴ = 263144209 is a prime.

It is a super-3 number, since 3×263144225³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5262860 + ... + 5262909.

It is an arithmetic number, because the mean of its divisors is an integer number (54383145).

Almost surely, 2^263144225 is an apocalyptic number.

263144225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263144225 is a deficient number, since it is larger than the sum of its proper divisors (63154645).

263144225 is a wasteful number, since it uses less digits than its factorization.

263144225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10525779 (or 10525774 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 263144225 is about 16221.7207780186. The cubic root of 263144225 is about 640.8129521092.

Adding to 263144225 its reverse (522441362), we get a palindrome (785585587).

The spelling of 263144225 in words is "two hundred sixty-three million, one hundred forty-four thousand, two hundred twenty-five".