1276306825 has 12 divisors (see below), whose sum is σ = 1584773568. Its totient is φ = 1019656400.

The previous prime is 1276306793. The next prime is 1276306847. The reversal of 1276306825 is 5286036721.

It is not a de Polignac number, because 1276306825 - 2⁵ = 1276306793 is a prime.

It is a super-2 number, since 2×1276306825² = 3257918223083161250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15781 + ... + 52930.

It is an arithmetic number, because the mean of its divisors is an integer number (132064464).

Almost surely, 2^1276306825 is an apocalyptic number.

It is an amenable number.

1276306825 is a deficient number, since it is larger than the sum of its proper divisors (308466743).

1276306825 is an equidigital number, since it uses as much as digits as its factorization.

1276306825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69464 (or 69459 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 1276306825 is about 35725.4366663306. The cubic root of 1276306825 is about 1084.7217886922.

The spelling of 1276306825 in words is "one billion, two hundred seventy-six million, three hundred six thousand, eight hundred twenty-five".