225908329 has 2 divisors, whose sum is σ = 225908330. Its totient is φ = 225908328.

The previous prime is 225908327. The next prime is 225908381. The reversal of 225908329 is 923809522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149817600 + 76090729 = 12240^2 + 8723^2 .

It is a cyclic number.

It is not a de Polignac number, because 225908329 - 2¹ = 225908327 is a prime.

It is a super-2 number, since 2×225908329² = 102069146223144482, which contains 22 as substring.

Together with 225908327, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 225908291 and 225908300.

It is not a weakly prime, because it can be changed into another prime (225908327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112954164 + 112954165.

It is an arithmetic number, because the mean of its divisors is an integer number (112954165).

Almost surely, 2^225908329 is an apocalyptic number.

It is an amenable number.

225908329 is a deficient number, since it is larger than the sum of its proper divisors (1).

225908329 is an equidigital number, since it uses as much as digits as its factorization.

225908329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 225908329 is about 15030.2471370234. The cubic root of 225908329 is about 609.0375658874.

The spelling of 225908329 in words is "two hundred twenty-five million, nine hundred eight thousand, three hundred twenty-nine".