225122523257 has 2 divisors, whose sum is σ = 225122523258. Its totient is φ = 225122523256.

The previous prime is 225122523253. The next prime is 225122523259. The reversal of 225122523257 is 752325221522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152278672441 + 72843850816 = 390229^2 + 269896^2 .

It is a cyclic number.

It is not a de Polignac number, because 225122523257 - 2² = 225122523253 is a prime.

Together with 225122523259, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225122523257.

It is not a weakly prime, because it can be changed into another prime (225122523251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112561261628 + 112561261629.

It is an arithmetic number, because the mean of its divisors is an integer number (112561261629).

Almost surely, 2^225122523257 is an apocalyptic number.

It is an amenable number.

225122523257 is a deficient number, since it is larger than the sum of its proper divisors (1).

225122523257 is an equidigital number, since it uses as much as digits as its factorization.

225122523257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168000, while the sum is 38.

Adding to 225122523257 its reverse (752325221522), we get a palindrome (977447744779).

The spelling of 225122523257 in words is "two hundred twenty-five billion, one hundred twenty-two million, five hundred twenty-three thousand, two hundred fifty-seven".