225390811 has 6 divisors (see below), whose sum is σ = 239429300. Its totient is φ = 212132256.

The previous prime is 225390769. The next prime is 225390827. The reversal of 225390811 is 118093522.

It is not a de Polignac number, because 225390811 - 2²⁷ = 91173083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225390311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 389661 + ... + 390238.

Almost surely, 2^225390811 is an apocalyptic number.

225390811 is a deficient number, since it is larger than the sum of its proper divisors (14038489).

225390811 is an equidigital number, since it uses as much as digits as its factorization.

225390811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779933 (or 779916 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 225390811 is about 15013.0213814542. The cubic root of 225390811 is about 608.5721427487.

The spelling of 225390811 in words is "two hundred twenty-five million, three hundred ninety thousand, eight hundred eleven".