249246225931 has 2 divisors, whose sum is σ = 249246225932. Its totient is φ = 249246225930.

The previous prime is 249246225889. The next prime is 249246226027. The reversal of 249246225931 is 139522642942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249246225931 - 2⁹ = 249246225419 is a prime.

It is a super-2 number, since 2×249246225931² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (249246225031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124623112965 + 124623112966.

It is an arithmetic number, because the mean of its divisors is an integer number (124623112966).

Almost surely, 2^249246225931 is an apocalyptic number.

249246225931 is a deficient number, since it is larger than the sum of its proper divisors (1).

249246225931 is an equidigital number, since it uses as much as digits as its factorization.

249246225931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 49.

The spelling of 249246225931 in words is "two hundred forty-nine billion, two hundred forty-six million, two hundred twenty-five thousand, nine hundred thirty-one".