1266753025 has 6 divisors (see below), whose sum is σ = 1570773782. Its totient is φ = 1013402400.

The previous prime is 1266753017. The next prime is 1266753029. The reversal of 1266753025 is 5203576621.

It can be written as a sum of positive squares in 3 ways, for example, as 139405249 + 1127347776 = 11807^2 + 33576^2 .

It is not a de Polignac number, because 1266753025 - 2³ = 1266753017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266753029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25335036 + ... + 25335085.

Almost surely, 2^1266753025 is an apocalyptic number.

It is an amenable number.

1266753025 is a deficient number, since it is larger than the sum of its proper divisors (304020757).

1266753025 is an equidigital number, since it uses as much as digits as its factorization.

1266753025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50670131 (or 50670126 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 1266753025 is about 35591.4740492720. The cubic root of 1266753025 is about 1082.0084439966.

The spelling of 1266753025 in words is "one billion, two hundred sixty-six million, seven hundred fifty-three thousand, twenty-five".