225632387 has 2 divisors, whose sum is σ = 225632388. Its totient is φ = 225632386.

The previous prime is 225632371. The next prime is 225632417. The reversal of 225632387 is 783236522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225632387 - 2⁴ = 225632371 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225632387.

It is not a weakly prime, because it can be changed into another prime (225632317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112816193 + 112816194.

It is an arithmetic number, because the mean of its divisors is an integer number (112816194).

Almost surely, 2^225632387 is an apocalyptic number.

225632387 is a deficient number, since it is larger than the sum of its proper divisors (1).

225632387 is an equidigital number, since it uses as much as digits as its factorization.

225632387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 38.

The square root of 225632387 is about 15021.0647758406. The cubic root of 225632387 is about 608.7894895726.

It can be divided in two parts, 2256 and 32387, that added together give a palindrome (34643).

The spelling of 225632387 in words is "two hundred twenty-five million, six hundred thirty-two thousand, three hundred eighty-seven".