227250640649 has 2 divisors, whose sum is σ = 227250640650. Its totient is φ = 227250640648.

The previous prime is 227250640609. The next prime is 227250640709. The reversal of 227250640649 is 946046052722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221935210000 + 5315430649 = 471100^2 + 72907^2 .

It is a cyclic number.

It is not a de Polignac number, because 227250640649 - 2²⁸ = 226982205193 is a prime.

It is a super-2 number, since 2×227250640649² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (227250640609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113625320324 + 113625320325.

It is an arithmetic number, because the mean of its divisors is an integer number (113625320325).

Almost surely, 2^227250640649 is an apocalyptic number.

It is an amenable number.

227250640649 is a deficient number, since it is larger than the sum of its proper divisors (1).

227250640649 is an equidigital number, since it uses as much as digits as its factorization.

227250640649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 227250640649 in words is "two hundred twenty-seven billion, two hundred fifty million, six hundred forty thousand, six hundred forty-nine".