225905503787 has 2 divisors, whose sum is σ = 225905503788. Its totient is φ = 225905503786.

The previous prime is 225905503757. The next prime is 225905503819. The reversal of 225905503787 is 787305509522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225905503787 - 2¹⁸ = 225905241643 is a prime.

It is not a weakly prime, because it can be changed into another prime (225905503727) 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 as a sum of consecutive naturals, namely, 112952751893 + 112952751894.

It is an arithmetic number, because the mean of its divisors is an integer number (112952751894).

Almost surely, 2^225905503787 is an apocalyptic number.

225905503787 is a deficient number, since it is larger than the sum of its proper divisors (1).

225905503787 is an equidigital number, since it uses as much as digits as its factorization.

225905503787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292000, while the sum is 53.

The spelling of 225905503787 in words is "two hundred twenty-five billion, nine hundred five million, five hundred three thousand, seven hundred eighty-seven".