225727813 has 2 divisors, whose sum is σ = 225727814. Its totient is φ = 225727812.

The previous prime is 225727741. The next prime is 225727823. The reversal of 225727813 is 318727522.

225727813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225540324 + 187489 = 15018^2 + 433^2 .

It is a cyclic number.

It is not a de Polignac number, because 225727813 - 2¹³ = 225719621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225727823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112863906 + 112863907.

It is an arithmetic number, because the mean of its divisors is an integer number (112863907).

Almost surely, 2^225727813 is an apocalyptic number.

It is an amenable number.

225727813 is a deficient number, since it is larger than the sum of its proper divisors (1).

225727813 is an equidigital number, since it uses as much as digits as its factorization.

225727813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 225727813 is about 15024.2408460461. The cubic root of 225727813 is about 608.8753019547.

The spelling of 225727813 in words is "two hundred twenty-five million, seven hundred twenty-seven thousand, eight hundred thirteen".