2265005568421 has 2 divisors, whose sum is σ = 2265005568422. Its totient is φ = 2265005568420.

The previous prime is 2265005568403. The next prime is 2265005568431. The reversal of 2265005568421 is 1248655005622.

2265005568421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2239554152196 + 25451416225 = 1496514^2 + 159535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2265005568421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2265005568401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1132502784210 + 1132502784211.

It is an arithmetic number, because the mean of its divisors is an integer number (1132502784211).

Almost surely, 2^{2265005568421} is an apocalyptic number.

It is an amenable number.

2265005568421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2265005568421 is an equidigital number, since it uses as much as digits as its factorization.

2265005568421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152000, while the sum is 46.

The spelling of 2265005568421 in words is "two trillion, two hundred sixty-five billion, five million, five hundred sixty-eight thousand, four hundred twenty-one".