1266032587625 has 64 divisors (see below), whose sum is σ = 1761323054400. Its totient is φ = 902113228800.

The previous prime is 1266032587619. The next prime is 1266032587643. The reversal of 1266032587625 is 5267852306621.

It is a happy number.

It can be written as a sum of positive squares in 32 ways, for example, as 1221318947689 + 44713639936 = 1105133^2 + 211456^2 .

It is not a de Polignac number, because 1266032587625 - 2¹⁶ = 1266032522089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84299117 + ... + 84314133.

It is an arithmetic number, because the mean of its divisors is an integer number (27520672725).

Almost surely, 2^{1266032587625} is an apocalyptic number.

It is an amenable number.

1266032587625 is a deficient number, since it is larger than the sum of its proper divisors (495290466775).

1266032587625 is a wasteful number, since it uses less digits than its factorization.

1266032587625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16863 (or 16853 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 1266032587625 in words is "one trillion, two hundred sixty-six billion, thirty-two million, five hundred eighty-seven thousand, six hundred twenty-five".