225133545491 has 2 divisors, whose sum is σ = 225133545492. Its totient is φ = 225133545490.

The previous prime is 225133545463. The next prime is 225133545589. The reversal of 225133545491 is 194545331522.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225133545491 is a prime.

It is a super-2 number, since 2×225133545491² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (225133544491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112566772745 + 112566772746.

It is an arithmetic number, because the mean of its divisors is an integer number (112566772746).

Almost surely, 2^225133545491 is an apocalyptic number.

225133545491 is a deficient number, since it is larger than the sum of its proper divisors (1).

225133545491 is an equidigital number, since it uses as much as digits as its factorization.

225133545491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 44.

The spelling of 225133545491 in words is "two hundred twenty-five billion, one hundred thirty-three million, five hundred forty-five thousand, four hundred ninety-one".