1266236425 has 12 divisors (see below), whose sum is σ = 1624276620. Its totient is φ = 978057920.

The previous prime is 1266236407. The next prime is 1266236431. The reversal of 1266236425 is 5246326621.

It can be written as a sum of positive squares in 6 ways, for example, as 44943616 + 1221292809 = 6704^2 + 34947^2 .

It is not a de Polignac number, because 1266236425 - 2⁵ = 1266236393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 872542 + ... + 873991.

It is an arithmetic number, because the mean of its divisors is an integer number (135356385).

Almost surely, 2^1266236425 is an apocalyptic number.

It is an amenable number.

1266236425 is a deficient number, since it is larger than the sum of its proper divisors (358040195).

1266236425 is a wasteful number, since it uses less digits than its factorization.

1266236425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746572 (or 1746567 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 1266236425 is about 35584.2159531442. The cubic root of 1266236425 is about 1081.8613378249.

The spelling of 1266236425 in words is "one billion, two hundred sixty-six million, two hundred thirty-six thousand, four hundred twenty-five".