225720736291 has 2 divisors, whose sum is σ = 225720736292. Its totient is φ = 225720736290.

The previous prime is 225720736249. The next prime is 225720736309. The reversal of 225720736291 is 192637027522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225720736291 is a prime.

It is not a weakly prime, because it can be changed into another prime (225720733291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112860368145 + 112860368146.

It is an arithmetic number, because the mean of its divisors is an integer number (112860368146).

Almost surely, 2^225720736291 is an apocalyptic number.

225720736291 is a deficient number, since it is larger than the sum of its proper divisors (1).

225720736291 is an equidigital number, since it uses as much as digits as its factorization.

225720736291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 225720736291 in words is "two hundred twenty-five billion, seven hundred twenty million, seven hundred thirty-six thousand, two hundred ninety-one".