225656440453 has 2 divisors, whose sum is σ = 225656440454. Its totient is φ = 225656440452.

The previous prime is 225656440291. The next prime is 225656440489. The reversal of 225656440453 is 354044656522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213205674564 + 12450765889 = 461742^2 + 111583^2 .

It is a cyclic number.

It is not a de Polignac number, because 225656440453 - 2⁹ = 225656439941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225656440553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112828220226 + 112828220227.

It is an arithmetic number, because the mean of its divisors is an integer number (112828220227).

Almost surely, 2^225656440453 is an apocalyptic number.

It is an amenable number.

225656440453 is a deficient number, since it is larger than the sum of its proper divisors (1).

225656440453 is an equidigital number, since it uses as much as digits as its factorization.

225656440453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456000, while the sum is 46.

The spelling of 225656440453 in words is "two hundred twenty-five billion, six hundred fifty-six million, four hundred forty thousand, four hundred fifty-three".