1822125257 has 2 divisors, whose sum is σ = 1822125258. Its totient is φ = 1822125256.

The previous prime is 1822125247. The next prime is 1822125269. The reversal of 1822125257 is 7525212281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1076889856 + 745235401 = 32816^2 + 27299^2 .

It is a cyclic number.

It is not a de Polignac number, because 1822125257 - 2⁴ = 1822125241 is a prime.

It is not a weakly prime, because it can be changed into another prime (1822125247) 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, 911062628 + 911062629.

It is an arithmetic number, because the mean of its divisors is an integer number (911062629).

Almost surely, 2^1822125257 is an apocalyptic number.

It is an amenable number.

1822125257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1822125257 is an equidigital number, since it uses as much as digits as its factorization.

1822125257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 35.

The square root of 1822125257 is about 42686.3591443449. The cubic root of 1822125257 is about 1221.4042008234.

The spelling of 1822125257 in words is "one billion, eight hundred twenty-two million, one hundred twenty-five thousand, two hundred fifty-seven".