225321622987 has 2 divisors, whose sum is σ = 225321622988. Its totient is φ = 225321622986.

The previous prime is 225321622979. The next prime is 225321623053. The reversal of 225321622987 is 789226123522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225321622987 - 2³ = 225321622979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225321622987.

It is not a weakly prime, because it can be changed into another prime (225321622907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112660811493 + 112660811494.

It is an arithmetic number, because the mean of its divisors is an integer number (112660811494).

Almost surely, 2^225321622987 is an apocalyptic number.

225321622987 is a deficient number, since it is larger than the sum of its proper divisors (1).

225321622987 is an equidigital number, since it uses as much as digits as its factorization.

225321622987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 49.

The spelling of 225321622987 in words is "two hundred twenty-five billion, three hundred twenty-one million, six hundred twenty-two thousand, nine hundred eighty-seven".