225415439 has 2 divisors, whose sum is σ = 225415440. Its totient is φ = 225415438.

The previous prime is 225415423. The next prime is 225415441. The reversal of 225415439 is 934514522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225415439 - 2⁴ = 225415423 is a prime.

Together with 225415441, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 225415399 and 225415408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225415469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112707719 + 112707720.

It is an arithmetic number, because the mean of its divisors is an integer number (112707720).

Almost surely, 2^225415439 is an apocalyptic number.

225415439 is a deficient number, since it is larger than the sum of its proper divisors (1).

225415439 is an equidigital number, since it uses as much as digits as its factorization.

225415439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 225415439 is about 15013.8415803551. The cubic root of 225415439 is about 608.5943077589.

The spelling of 225415439 in words is "two hundred twenty-five million, four hundred fifteen thousand, four hundred thirty-nine".