225785773 has 2 divisors, whose sum is σ = 225785774. Its totient is φ = 225785772.

The previous prime is 225785771. The next prime is 225785849. The reversal of 225785773 is 377587522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212080969 + 13704804 = 14563^2 + 3702^2 .

It is a cyclic number.

It is not a de Polignac number, because 225785773 - 2¹ = 225785771 is a prime.

Together with 225785771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225785771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112892886 + 112892887.

It is an arithmetic number, because the mean of its divisors is an integer number (112892887).

Almost surely, 2^225785773 is an apocalyptic number.

It is an amenable number.

225785773 is a deficient number, since it is larger than the sum of its proper divisors (1).

225785773 is an equidigital number, since it uses as much as digits as its factorization.

225785773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 823200, while the sum is 46.

The square root of 225785773 is about 15026.1696050590. The cubic root of 225785773 is about 608.9274110147.

The spelling of 225785773 in words is "two hundred twenty-five million, seven hundred eighty-five thousand, seven hundred seventy-three".