225603631787 has 2 divisors, whose sum is σ = 225603631788. Its totient is φ = 225603631786.

The previous prime is 225603631709. The next prime is 225603631793. The reversal of 225603631787 is 787136306522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225603631787 is a prime.

It is a super-3 number, since 3×225603631787³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (225603631087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112801815893 + 112801815894.

It is an arithmetic number, because the mean of its divisors is an integer number (112801815894).

Almost surely, 2^225603631787 is an apocalyptic number.

225603631787 is a deficient number, since it is larger than the sum of its proper divisors (1).

225603631787 is an equidigital number, since it uses as much as digits as its factorization.

225603631787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 225603631787 in words is "two hundred twenty-five billion, six hundred three million, six hundred thirty-one thousand, seven hundred eighty-seven".