225132505261 has 2 divisors, whose sum is σ = 225132505262. Its totient is φ = 225132505260.

The previous prime is 225132505223. The next prime is 225132505291. The reversal of 225132505261 is 162505231522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219431349225 + 5701156036 = 468435^2 + 75506^2 .

It is a cyclic number.

It is not a de Polignac number, because 225132505261 - 2²⁷ = 224998287533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225132505291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112566252630 + 112566252631.

It is an arithmetic number, because the mean of its divisors is an integer number (112566252631).

Almost surely, 2^225132505261 is an apocalyptic number.

It is an amenable number.

225132505261 is a deficient number, since it is larger than the sum of its proper divisors (1).

225132505261 is an equidigital number, since it uses as much as digits as its factorization.

225132505261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 225132505261 its reverse (162505231522), we get a palindrome (387637736783).

The spelling of 225132505261 in words is "two hundred twenty-five billion, one hundred thirty-two million, five hundred five thousand, two hundred sixty-one".