225475099891 has 2 divisors, whose sum is σ = 225475099892. Its totient is φ = 225475099890.

The previous prime is 225475099879. The next prime is 225475099901. The reversal of 225475099891 is 198990574522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225475099891 - 2⁷ = 225475099763 is a prime.

It is not a weakly prime, because it can be changed into another prime (225475099391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112737549945 + 112737549946.

It is an arithmetic number, because the mean of its divisors is an integer number (112737549946).

Almost surely, 2^225475099891 is an apocalyptic number.

225475099891 is a deficient number, since it is larger than the sum of its proper divisors (1).

225475099891 is an equidigital number, since it uses as much as digits as its factorization.

225475099891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16329600, while the sum is 61.

The spelling of 225475099891 in words is "two hundred twenty-five billion, four hundred seventy-five million, ninety-nine thousand, eight hundred ninety-one".