225615499 has 2 divisors, whose sum is σ = 225615500. Its totient is φ = 225615498.

The previous prime is 225615457. The next prime is 225615521. The reversal of 225615499 is 994516522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225615499 is a prime.

It is not a weakly prime, because it can be changed into another prime (225615409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112807749 + 112807750.

It is an arithmetic number, because the mean of its divisors is an integer number (112807750).

Almost surely, 2^225615499 is an apocalyptic number.

225615499 is a deficient number, since it is larger than the sum of its proper divisors (1).

225615499 is an equidigital number, since it uses as much as digits as its factorization.

225615499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 43.

The square root of 225615499 is about 15020.5026214172. The cubic root of 225615499 is about 608.7743004212.

The spelling of 225615499 in words is "two hundred twenty-five million, six hundred fifteen thousand, four hundred ninety-nine".