225688319 has 4 divisors (see below), whose sum is σ = 225733680. Its totient is φ = 225642960.

The previous prime is 225688303. The next prime is 225688367. The reversal of 225688319 is 913886522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 913886522 = 2 ⋅456943261.

It is a cyclic number.

It is not a de Polignac number, because 225688319 - 2⁴ = 225688303 is a prime.

It is a super-3 number, since 3×225688319³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 225688319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225688369) 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, 14147 + ... + 25524.

It is an arithmetic number, because the mean of its divisors is an integer number (56433420).

Almost surely, 2^225688319 is an apocalyptic number.

225688319 is a deficient number, since it is larger than the sum of its proper divisors (45361).

225688319 is an equidigital number, since it uses as much as digits as its factorization.

225688319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45360.

The product of its digits is 207360, while the sum is 44.

The square root of 225688319 is about 15022.9264459359. The cubic root of 225688319 is about 608.8397896809.

The spelling of 225688319 in words is "two hundred twenty-five million, six hundred eighty-eight thousand, three hundred nineteen".