225947656019 has 2 divisors, whose sum is σ = 225947656020. Its totient is φ = 225947656018.

The previous prime is 225947655991. The next prime is 225947656021. The reversal of 225947656019 is 910656749522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225947656019 - 2¹⁶ = 225947590483 is a prime.

It is a super-2 number, since 2×225947656019² (a number of 24 digits) contains 22 as substring.

Together with 225947656021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225947656049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112973828009 + 112973828010.

It is an arithmetic number, because the mean of its divisors is an integer number (112973828010).

Almost surely, 2^225947656019 is an apocalyptic number.

225947656019 is a deficient number, since it is larger than the sum of its proper divisors (1).

225947656019 is an equidigital number, since it uses as much as digits as its factorization.

225947656019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 225947656019 in words is "two hundred twenty-five billion, nine hundred forty-seven million, six hundred fifty-six thousand, nineteen".