225782569 has 2 divisors, whose sum is σ = 225782570. Its totient is φ = 225782568.

The previous prime is 225782507. The next prime is 225782573. The reversal of 225782569 is 965287522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149744169 + 76038400 = 12237^2 + 8720^2 .

It is a cyclic number.

It is not a de Polignac number, because 225782569 - 2⁹ = 225782057 is a prime.

It is a super-2 number, since 2×225782569² = 101955536928479522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (225782069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112891284 + 112891285.

It is an arithmetic number, because the mean of its divisors is an integer number (112891285).

Almost surely, 2^225782569 is an apocalyptic number.

It is an amenable number.

225782569 is a deficient number, since it is larger than the sum of its proper divisors (1).

225782569 is an equidigital number, since it uses as much as digits as its factorization.

225782569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 46.

The square root of 225782569 is about 15026.0629906839. The cubic root of 225782569 is about 608.9245306846.

The spelling of 225782569 in words is "two hundred twenty-five million, seven hundred eighty-two thousand, five hundred sixty-nine".