1225386563 has 2 divisors, whose sum is σ = 1225386564. Its totient is φ = 1225386562.

The previous prime is 1225386527. The next prime is 1225386623. The reversal of 1225386563 is 3656835221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1225386563 - 2⁸ = 1225386307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1225386563.

It is not a weakly prime, because it can be changed into another prime (1225382563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612693281 + 612693282.

It is an arithmetic number, because the mean of its divisors is an integer number (612693282).

Almost surely, 2^1225386563 is an apocalyptic number.

1225386563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225386563 is an equidigital number, since it uses as much as digits as its factorization.

1225386563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 41.

The square root of 1225386563 is about 35005.5218929814. The cubic root of 1225386563 is about 1070.1000177272.

The spelling of 1225386563 in words is "one billion, two hundred twenty-five million, three hundred eighty-six thousand, five hundred sixty-three".