225754777477 has 2 divisors, whose sum is σ = 225754777478. Its totient is φ = 225754777476.

The previous prime is 225754777433. The next prime is 225754777519. The reversal of 225754777477 is 774777457522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223621168996 + 2133608481 = 472886^2 + 46191^2 .

It is a cyclic number.

It is not a de Polignac number, because 225754777477 - 2⁷ = 225754777349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225754771477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112877388738 + 112877388739.

It is an arithmetic number, because the mean of its divisors is an integer number (112877388739).

Almost surely, 2^225754777477 is an apocalyptic number.

It is an amenable number.

225754777477 is a deficient number, since it is larger than the sum of its proper divisors (1).

225754777477 is an equidigital number, since it uses as much as digits as its factorization.

225754777477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188238400, while the sum is 64.

The spelling of 225754777477 in words is "two hundred twenty-five billion, seven hundred fifty-four million, seven hundred seventy-seven thousand, four hundred seventy-seven".