1225305241 has 2 divisors, whose sum is σ = 1225305242. Its totient is φ = 1225305240.

The previous prime is 1225305227. The next prime is 1225305259. The reversal of 1225305241 is 1425035221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1224720016 + 585225 = 34996^2 + 765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225305241 - 2⁷ = 1225305113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225308241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612652620 + 612652621.

It is an arithmetic number, because the mean of its divisors is an integer number (612652621).

Almost surely, 2^1225305241 is an apocalyptic number.

It is an amenable number.

1225305241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225305241 is an equidigital number, since it uses as much as digits as its factorization.

1225305241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1225305241 is about 35004.3603141094. The cubic root of 1225305241 is about 1070.0763450345.

The spelling of 1225305241 in words is "one billion, two hundred twenty-five million, three hundred five thousand, two hundred forty-one".