1266304225 has 6 divisors (see below), whose sum is σ = 1570217270. Its totient is φ = 1013043360.

The previous prime is 1266304223. The next prime is 1266304297. The reversal of 1266304225 is 5224036621.

It can be written as a sum of positive squares in 3 ways, for example, as 88510464 + 1177793761 = 9408^2 + 34319^2 .

It is not a de Polignac number, because 1266304225 - 2¹ = 1266304223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1266304223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25326060 + ... + 25326109.

Almost surely, 2^1266304225 is an apocalyptic number.

It is an amenable number.

1266304225 is a deficient number, since it is larger than the sum of its proper divisors (303913045).

1266304225 is an equidigital number, since it uses as much as digits as its factorization.

1266304225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50652179 (or 50652174 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 1266304225 is about 35585.1686099701. The cubic root of 1266304225 is about 1081.8806467228.

The spelling of 1266304225 in words is "one billion, two hundred sixty-six million, three hundred four thousand, two hundred twenty-five".