1263222625 has 16 divisors (see below), whose sum is σ = 1801717632. Its totient is φ = 866209200.

The previous prime is 1263222613. The next prime is 1263222647. The reversal of 1263222625 is 5262223621.

It is not a de Polignac number, because 1263222625 - 2⁷ = 1263222497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 720967 + ... + 722716.

It is an arithmetic number, because the mean of its divisors is an integer number (112607352).

Almost surely, 2^1263222625 is an apocalyptic number.

It is an amenable number.

1263222625 is a deficient number, since it is larger than the sum of its proper divisors (538495007).

1263222625 is an equidigital number, since it uses as much as digits as its factorization.

1263222625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443705 (or 1443695 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 1263222625 is about 35541.8432977244. The cubic root of 1263222625 is about 1081.0023344901.

The spelling of 1263222625 in words is "one billion, two hundred sixty-three million, two hundred twenty-two thousand, six hundred twenty-five".