1266500125 has 16 divisors (see below), whose sum is σ = 1724284224. Its totient is φ = 921090000.

The previous prime is 1266500089. The next prime is 1266500189. The reversal of 1266500125 is 5210056621.

1266500125 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1266500125 - 2¹⁵ = 1266467357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1266500093 and 1266500102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 459171 + ... + 461920.

It is an arithmetic number, because the mean of its divisors is an integer number (107767764).

Almost surely, 2^1266500125 is an apocalyptic number.

It is an amenable number.

1266500125 is a deficient number, since it is larger than the sum of its proper divisors (457784099).

1266500125 is an equidigital number, since it uses as much as digits as its factorization.

1266500125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921117 (or 921107 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1266500125 is about 35587.9210547624. The cubic root of 1266500125 is about 1081.9364336041.

Adding to 1266500125 its reverse (5210056621), we get a palindrome (6476556746).

The spelling of 1266500125 in words is "one billion, two hundred sixty-six million, five hundred thousand, one hundred twenty-five".