225635267491 has 2 divisors, whose sum is σ = 225635267492. Its totient is φ = 225635267490.

The previous prime is 225635267399. The next prime is 225635267497. The reversal of 225635267491 is 194762536522.

225635267491 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 is a cyclic number.

It is not a de Polignac number, because 225635267491 - 2¹⁹ = 225634743203 is a prime.

It is a super-2 number, since 2×225635267491² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (225635267497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112817633745 + 112817633746.

It is an arithmetic number, because the mean of its divisors is an integer number (112817633746).

Almost surely, 2^225635267491 is an apocalyptic number.

225635267491 is a deficient number, since it is larger than the sum of its proper divisors (1).

225635267491 is an equidigital number, since it uses as much as digits as its factorization.

225635267491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 52.

The spelling of 225635267491 in words is "two hundred twenty-five billion, six hundred thirty-five million, two hundred sixty-seven thousand, four hundred ninety-one".