225045517 has 2 divisors, whose sum is σ = 225045518. Its totient is φ = 225045516.

The previous prime is 225045479. The next prime is 225045521. The reversal of 225045517 is 715540522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158231241 + 66814276 = 12579^2 + 8174^2 .

It is a cyclic number.

It is not a de Polignac number, because 225045517 - 2¹⁹ = 224521229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225025517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112522758 + 112522759.

It is an arithmetic number, because the mean of its divisors is an integer number (112522759).

Almost surely, 2^225045517 is an apocalyptic number.

It is an amenable number.

225045517 is a deficient number, since it is larger than the sum of its proper divisors (1).

225045517 is an equidigital number, since it uses as much as digits as its factorization.

225045517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 225045517 is about 15001.5171566079. The cubic root of 225045517 is about 608.2612106569.

The spelling of 225045517 in words is "two hundred twenty-five million, forty-five thousand, five hundred seventeen".