225081487 has 2 divisors, whose sum is σ = 225081488. Its totient is φ = 225081486.

The previous prime is 225081481. The next prime is 225081491. The reversal of 225081487 is 784180522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225081487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225081481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112540743 + 112540744.

It is an arithmetic number, because the mean of its divisors is an integer number (112540744).

Almost surely, 2^225081487 is an apocalyptic number.

225081487 is a deficient number, since it is larger than the sum of its proper divisors (1).

225081487 is an equidigital number, since it uses as much as digits as its factorization.

225081487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 225081487 is about 15002.7159874471. The cubic root of 225081487 is about 608.2936159387.

The spelling of 225081487 in words is "two hundred twenty-five million, eighty-one thousand, four hundred eighty-seven".