225947655991 has 2 divisors, whose sum is σ = 225947655992. Its totient is φ = 225947655990.

The previous prime is 225947655959. The next prime is 225947656019. The reversal of 225947655991 is 199556749522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225947655991 - 2⁵ = 225947655959 is a prime.

It is a super-3 number, since 3×225947655991³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225947655091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112973827995 + 112973827996.

It is an arithmetic number, because the mean of its divisors is an integer number (112973827996).

Almost surely, 2^225947655991 is an apocalyptic number.

225947655991 is a deficient number, since it is larger than the sum of its proper divisors (1).

225947655991 is an equidigital number, since it uses as much as digits as its factorization.

225947655991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236000, while the sum is 64.

The spelling of 225947655991 in words is "two hundred twenty-five billion, nine hundred forty-seven million, six hundred fifty-five thousand, nine hundred ninety-one".