225546252493 has 2 divisors, whose sum is σ = 225546252494. Its totient is φ = 225546252492.

The previous prime is 225546252487. The next prime is 225546252521. The reversal of 225546252493 is 394252645522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160126424964 + 65419827529 = 400158^2 + 255773^2 .

It is a cyclic number.

It is not a de Polignac number, because 225546252493 - 2⁵ = 225546252461 is a prime.

It is a super-2 number, since 2×225546252493² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225546252293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112773126246 + 112773126247.

It is an arithmetic number, because the mean of its divisors is an integer number (112773126247).

Almost surely, 2^225546252493 is an apocalyptic number.

It is an amenable number.

225546252493 is a deficient number, since it is larger than the sum of its proper divisors (1).

225546252493 is an equidigital number, since it uses as much as digits as its factorization.

225546252493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184000, while the sum is 49.

The spelling of 225546252493 in words is "two hundred twenty-five billion, five hundred forty-six million, two hundred fifty-two thousand, four hundred ninety-three".