225215132771 has 2 divisors, whose sum is σ = 225215132772. Its totient is φ = 225215132770.

The previous prime is 225215132719. The next prime is 225215132801. The reversal of 225215132771 is 177231512522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225215132771 - 2³⁴ = 208035263587 is a prime.

It is not a weakly prime, because it can be changed into another prime (225215132671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112607566385 + 112607566386.

It is an arithmetic number, because the mean of its divisors is an integer number (112607566386).

Almost surely, 2^225215132771 is an apocalyptic number.

225215132771 is a deficient number, since it is larger than the sum of its proper divisors (1).

225215132771 is an equidigital number, since it uses as much as digits as its factorization.

225215132771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 38.

The spelling of 225215132771 in words is "two hundred twenty-five billion, two hundred fifteen million, one hundred thirty-two thousand, seven hundred seventy-one".