225434987 has 2 divisors, whose sum is σ = 225434988. Its totient is φ = 225434986.

The previous prime is 225434971. The next prime is 225435013. The reversal of 225434987 is 789434522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225434987 - 2⁴ = 225434971 is a prime.

It is not a weakly prime, because it can be changed into another prime (225434087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112717493 + 112717494.

It is an arithmetic number, because the mean of its divisors is an integer number (112717494).

Almost surely, 2^225434987 is an apocalyptic number.

225434987 is a deficient number, since it is larger than the sum of its proper divisors (1).

225434987 is an equidigital number, since it uses as much as digits as its factorization.

225434987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 44.

The square root of 225434987 is about 15014.4925655182. The cubic root of 225434987 is about 608.6118996590.

The spelling of 225434987 in words is "two hundred twenty-five million, four hundred thirty-four thousand, nine hundred eighty-seven".