225290893 has 2 divisors, whose sum is σ = 225290894. Its totient is φ = 225290892.

The previous prime is 225290869. The next prime is 225290899. The reversal of 225290893 is 398092522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191905609 + 33385284 = 13853^2 + 5778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225290893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225290899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112645446 + 112645447.

It is an arithmetic number, because the mean of its divisors is an integer number (112645447).

Almost surely, 2^225290893 is an apocalyptic number.

It is an amenable number.

225290893 is a deficient number, since it is larger than the sum of its proper divisors (1).

225290893 is an equidigital number, since it uses as much as digits as its factorization.

225290893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 225290893 is about 15009.6933013303. The cubic root of 225290893 is about 608.4822007515.

It can be divided in two parts, 2252908 and 93, that added together give a square (2253001 = 1501²).

The spelling of 225290893 in words is "two hundred twenty-five million, two hundred ninety thousand, eight hundred ninety-three".