1223254563 has 8 divisors (see below), whose sum is σ = 1701919488. Its totient is φ = 780046344.

The previous prime is 1223254553. The next prime is 1223254579. The reversal of 1223254563 is 3654523221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1223254563 - 2⁴ = 1223254547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223254553) 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 in 7 ways as a sum of consecutive naturals, for example, 8864095 + ... + 8864232.

It is an arithmetic number, because the mean of its divisors is an integer number (212739936).

Almost surely, 2^1223254563 is an apocalyptic number.

1223254563 is a deficient number, since it is larger than the sum of its proper divisors (478664925).

1223254563 is a wasteful number, since it uses less digits than its factorization.

1223254563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17728353.

The product of its digits is 43200, while the sum is 33.

The square root of 1223254563 is about 34975.0562973099. The cubic root of 1223254563 is about 1069.4790496934.

Adding to 1223254563 its reverse (3654523221), we get a palindrome (4877777784).

It can be divided in two parts, 12232 and 54563, that added together give a triangular number (66795 = T₃₆₅).

The spelling of 1223254563 in words is "one billion, two hundred twenty-three million, two hundred fifty-four thousand, five hundred sixty-three".