1122505249 has 2 divisors, whose sum is σ = 1122505250.
Its totient is φ = 1122505248.
The previous prime is 1122505229. The next prime is 1122505259. The reversal of 1122505249 is 9425052211.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 982509025 + 139996224 = 31345^2 + 11832^2
It is an emirp because it is prime and its reverse (9425052211) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1122505249 - 219 = 1121980961 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 1122505249.
It is not a weakly prime, because it can be changed into another prime (1122505229) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561252624 + 561252625.
It is an arithmetic number, because the mean of its divisors is an integer number (561252625).
Almost surely, 21122505249 is an apocalyptic number.
It is an amenable number.
1122505249 is a deficient number, since it is larger than the sum of its proper divisors (1).
1122505249 is an equidigital number, since it uses as much as digits as its factorization.
1122505249 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 7200, while the sum is 31.
The square root of 1122505249 is about 33503.8094699692.
The cubic root of 1122505249 is about 1039.2725586698.
The spelling of 1122505249 in words is "one billion, one hundred twenty-two million, five hundred five thousand, two hundred forty-nine".