225634276369 has 2 divisors, whose sum is σ = 225634276370. Its totient is φ = 225634276368.

The previous prime is 225634276349. The next prime is 225634276409. The reversal of 225634276369 is 963672436522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162984186369 + 62650090000 = 403713^2 + 250300^2 .

It is a cyclic number.

It is not a de Polignac number, because 225634276369 - 2⁵ = 225634276337 is a prime.

It is a super-2 number, since 2×225634276369² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (225634276319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112817138184 + 112817138185.

It is an arithmetic number, because the mean of its divisors is an integer number (112817138185).

Almost surely, 2^225634276369 is an apocalyptic number.

It is an amenable number.

225634276369 is a deficient number, since it is larger than the sum of its proper divisors (1).

225634276369 is an equidigital number, since it uses as much as digits as its factorization.

225634276369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19595520, while the sum is 55.

The spelling of 225634276369 in words is "two hundred twenty-five billion, six hundred thirty-four million, two hundred seventy-six thousand, three hundred sixty-nine".