1266238425 has 12 divisors (see below), whose sum is σ = 2093514320. Its totient is φ = 675327120.

The previous prime is 1266238417. The next prime is 1266238429. The reversal of 1266238425 is 5248326621.

It is not a de Polignac number, because 1266238425 - 2³ = 1266238417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1266238429) 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 in 11 ways as a sum of consecutive naturals, for example, 8441515 + ... + 8441664.

Almost surely, 2^1266238425 is an apocalyptic number.

1266238425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1266238425 is a deficient number, since it is larger than the sum of its proper divisors (827275895).

1266238425 is a wasteful number, since it uses less digits than its factorization.

1266238425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16883192 (or 16883187 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 1266238425 is about 35584.2440554805. The cubic root of 1266238425 is about 1081.8619074188.

The spelling of 1266238425 in words is "one billion, two hundred sixty-six million, two hundred thirty-eight thousand, four hundred twenty-five".