225377261 has 2 divisors, whose sum is σ = 225377262. Its totient is φ = 225377260.

The previous prime is 225377219. The next prime is 225377263. The reversal of 225377261 is 162773522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157000900 + 68376361 = 12530^2 + 8269^2 .

It is a cyclic number.

It is not a de Polignac number, because 225377261 - 2⁶ = 225377197 is a prime.

Together with 225377263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225377263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112688630 + 112688631.

It is an arithmetic number, because the mean of its divisors is an integer number (112688631).

Almost surely, 2^225377261 is an apocalyptic number.

It is an amenable number.

225377261 is a deficient number, since it is larger than the sum of its proper divisors (1).

225377261 is an equidigital number, since it uses as much as digits as its factorization.

225377261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 35.

The square root of 225377261 is about 15012.5700997531. The cubic root of 225377261 is about 608.5599471646.

The spelling of 225377261 in words is "two hundred twenty-five million, three hundred seventy-seven thousand, two hundred sixty-one".