1266276925 has 6 divisors (see below), whose sum is σ = 1570183418. Its totient is φ = 1013021520.

The previous prime is 1266276919. The next prime is 1266276971. The reversal of 1266276925 is 5296726621.

It can be written as a sum of positive squares in 3 ways, for example, as 240932484 + 1025344441 = 15522^2 + 32021^2 .

It is not a de Polignac number, because 1266276925 - 2¹⁵ = 1266244157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25325514 + ... + 25325563.

Almost surely, 2^1266276925 is an apocalyptic number.

It is an amenable number.

1266276925 is a deficient number, since it is larger than the sum of its proper divisors (303906493).

1266276925 is an equidigital number, since it uses as much as digits as its factorization.

1266276925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50651087 (or 50651082 counting only the distinct ones).

The product of its digits is 544320, while the sum is 46.

The square root of 1266276925 is about 35584.7850211295. The cubic root of 1266276925 is about 1081.8728719840.

The spelling of 1266276925 in words is "one billion, two hundred sixty-six million, two hundred seventy-six thousand, nine hundred twenty-five".