225021711331 has 2 divisors, whose sum is σ = 225021711332. Its totient is φ = 225021711330.

The previous prime is 225021711307. The next prime is 225021711337. The reversal of 225021711331 is 133117120522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225021711331 - 2⁹ = 225021710819 is a prime.

It is a super-2 number, since 2×225021711331² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 225021711331.

It is not a weakly prime, because it can be changed into another prime (225021711337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112510855665 + 112510855666.

It is an arithmetic number, because the mean of its divisors is an integer number (112510855666).

Almost surely, 2^225021711331 is an apocalyptic number.

225021711331 is a deficient number, since it is larger than the sum of its proper divisors (1).

225021711331 is an equidigital number, since it uses as much as digits as its factorization.

225021711331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

Adding to 225021711331 its reverse (133117120522), we get a palindrome (358138831853).

The spelling of 225021711331 in words is "two hundred twenty-five billion, twenty-one million, seven hundred eleven thousand, three hundred thirty-one".