225420024517 has 2 divisors, whose sum is σ = 225420024518. Its totient is φ = 225420024516.

The previous prime is 225420024491. The next prime is 225420024527. The reversal of 225420024517 is 715420024522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184557019201 + 40863005316 = 429601^2 + 202146^2 .

It is a cyclic number.

It is not a de Polignac number, because 225420024517 - 2¹¹ = 225420022469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225420024527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112710012258 + 112710012259.

It is an arithmetic number, because the mean of its divisors is an integer number (112710012259).

Almost surely, 2^225420024517 is an apocalyptic number.

It is an amenable number.

225420024517 is a deficient number, since it is larger than the sum of its proper divisors (1).

225420024517 is an equidigital number, since it uses as much as digits as its factorization.

225420024517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800, while the sum is 34.

The spelling of 225420024517 in words is "two hundred twenty-five billion, four hundred twenty million, twenty-four thousand, five hundred seventeen".