225709877 has 2 divisors, whose sum is σ = 225709878. Its totient is φ = 225709876.

The previous prime is 225709843. The next prime is 225709889. The reversal of 225709877 is 778907522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183900721 + 41809156 = 13561^2 + 6466^2 .

It is a cyclic number.

It is not a de Polignac number, because 225709877 - 2¹⁰ = 225708853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225709807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112854938 + 112854939.

It is an arithmetic number, because the mean of its divisors is an integer number (112854939).

Almost surely, 2^225709877 is an apocalyptic number.

It is an amenable number.

225709877 is a deficient number, since it is larger than the sum of its proper divisors (1).

225709877 is an equidigital number, since it uses as much as digits as its factorization.

225709877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 225709877 is about 15023.6439321491. The cubic root of 225709877 is about 608.8591747489.

The spelling of 225709877 in words is "two hundred twenty-five million, seven hundred nine thousand, eight hundred seventy-seven".