225945719 has 2 divisors, whose sum is σ = 225945720. Its totient is φ = 225945718.

The previous prime is 225945697. The next prime is 225945749. The reversal of 225945719 is 917549522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225945719 - 2¹² = 225941623 is a prime.

It is a super-2 number, since 2×225945719² = 102102935868853922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 225945719.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225945749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112972859 + 112972860.

It is an arithmetic number, because the mean of its divisors is an integer number (112972860).

Almost surely, 2^225945719 is an apocalyptic number.

225945719 is a deficient number, since it is larger than the sum of its proper divisors (1).

225945719 is an equidigital number, since it uses as much as digits as its factorization.

225945719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 225945719 is about 15031.4909107513. The cubic root of 225945719 is about 609.0711645577.

The spelling of 225945719 in words is "two hundred twenty-five million, nine hundred forty-five thousand, seven hundred nineteen".