225231511 has 2 divisors, whose sum is σ = 225231512. Its totient is φ = 225231510.

The previous prime is 225231509. The next prime is 225231527. The reversal of 225231511 is 115132522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225231511 - 2¹ = 225231509 is a prime.

Together with 225231509, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225231541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112615755 + 112615756.

It is an arithmetic number, because the mean of its divisors is an integer number (112615756).

Almost surely, 2^225231511 is an apocalyptic number.

225231511 is a deficient number, since it is larger than the sum of its proper divisors (1).

225231511 is an equidigital number, since it uses as much as digits as its factorization.

225231511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 22.

The square root of 225231511 is about 15007.7150492672. The cubic root of 225231511 is about 608.4287349639.

The spelling of 225231511 in words is "two hundred twenty-five million, two hundred thirty-one thousand, five hundred eleven".