225518251087 has 2 divisors, whose sum is σ = 225518251088. Its totient is φ = 225518251086.

The previous prime is 225518251069. The next prime is 225518251111. The reversal of 225518251087 is 780152815522.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225518251087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225518851087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112759125543 + 112759125544.

It is an arithmetic number, because the mean of its divisors is an integer number (112759125544).

Almost surely, 2^225518251087 is an apocalyptic number.

225518251087 is a deficient number, since it is larger than the sum of its proper divisors (1).

225518251087 is an equidigital number, since it uses as much as digits as its factorization.

225518251087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448000, while the sum is 46.

The spelling of 225518251087 in words is "two hundred twenty-five billion, five hundred eighteen million, two hundred fifty-one thousand, eighty-seven".