225765481 has 2 divisors, whose sum is σ = 225765482. Its totient is φ = 225765480.

The previous prime is 225765461. The next prime is 225765503. The reversal of 225765481 is 184567522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159896025 + 65869456 = 12645^2 + 8116^2 .

It is a cyclic number.

It is not a de Polignac number, because 225765481 - 2¹³ = 225757289 is a prime.

It is a super-2 number, since 2×225765481² = 101940104822322722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (225765431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112882740 + 112882741.

It is an arithmetic number, because the mean of its divisors is an integer number (112882741).

Almost surely, 2^225765481 is an apocalyptic number.

It is an amenable number.

225765481 is a deficient number, since it is larger than the sum of its proper divisors (1).

225765481 is an equidigital number, since it uses as much as digits as its factorization.

225765481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 40.

The square root of 225765481 is about 15025.4943679068. The cubic root of 225765481 is about 608.9091684640.

The spelling of 225765481 in words is "two hundred twenty-five million, seven hundred sixty-five thousand, four hundred eighty-one".