65225655289 has 2 divisors, whose sum is σ = 65225655290. Its totient is φ = 65225655288.

The previous prime is 65225655251. The next prime is 65225655343. The reversal of 65225655289 is 98255652256.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43714446400 + 21511208889 = 209080^2 + 146667^2 .

It is a cyclic number.

It is not a de Polignac number, because 65225655289 - 2⁹ = 65225654777 is a prime.

It is a super-2 number, since 2×65225655289² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65225650289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32612827644 + 32612827645.

It is an arithmetic number, because the mean of its divisors is an integer number (32612827645).

Almost surely, 2^65225655289 is an apocalyptic number.

It is an amenable number.

65225655289 is a deficient number, since it is larger than the sum of its proper divisors (1).

65225655289 is an equidigital number, since it uses as much as digits as its factorization.

65225655289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960000, while the sum is 55.

The spelling of 65225655289 in words is "sixty-five billion, two hundred twenty-five million, six hundred fifty-five thousand, two hundred eighty-nine".