225175289789 has 2 divisors, whose sum is σ = 225175289790. Its totient is φ = 225175289788.

The previous prime is 225175289749. The next prime is 225175289797. The reversal of 225175289789 is 987982571522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197728740889 + 27446548900 = 444667^2 + 165670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225175289789 is a prime.

It is a super-2 number, since 2×225175289789² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225175289749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112587644894 + 112587644895.

It is an arithmetic number, because the mean of its divisors is an integer number (112587644895).

Almost surely, 2^225175289789 is an apocalyptic number.

It is an amenable number.

225175289789 is a deficient number, since it is larger than the sum of its proper divisors (1).

225175289789 is an equidigital number, since it uses as much as digits as its factorization.

225175289789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50803200, while the sum is 65.

The spelling of 225175289789 in words is "two hundred twenty-five billion, one hundred seventy-five million, two hundred eighty-nine thousand, seven hundred eighty-nine".