225761617 has 2 divisors, whose sum is σ = 225761618. Its totient is φ = 225761616.

The previous prime is 225761573. The next prime is 225761681. The reversal of 225761617 is 716167522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225120016 + 641601 = 15004^2 + 801^2 .

It is a cyclic number.

It is not a de Polignac number, because 225761617 - 2⁷ = 225761489 is a prime.

It is not a weakly prime, because it can be changed into another prime (225761687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112880808 + 112880809.

It is an arithmetic number, because the mean of its divisors is an integer number (112880809).

Almost surely, 2^225761617 is an apocalyptic number.

It is an amenable number.

225761617 is a deficient number, since it is larger than the sum of its proper divisors (1).

225761617 is an equidigital number, since it uses as much as digits as its factorization.

225761617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 37.

The square root of 225761617 is about 15025.3657858969. The cubic root of 225761617 is about 608.9056945960.

The spelling of 225761617 in words is "two hundred twenty-five million, seven hundred sixty-one thousand, six hundred seventeen".