766681225 has 12 divisors (see below), whose sum is σ = 951028416. Its totient is φ = 613123280.

The previous prime is 766681219. The next prime is 766681261. The reversal of 766681225 is 522186667.

It is not a de Polignac number, because 766681225 - 2⁵ = 766681193 is a prime.

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, 129684 + ... + 135466.

It is an arithmetic number, because the mean of its divisors is an integer number (79252368).

Almost surely, 2^766681225 is an apocalyptic number.

It is an amenable number.

766681225 is a deficient number, since it is larger than the sum of its proper divisors (184347191).

766681225 is a wasteful number, since it uses less digits than its factorization.

766681225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11096 (or 11091 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 766681225 is about 27689.0091010856. The cubic root of 766681225 is about 915.2469199334.

The spelling of 766681225 in words is "seven hundred sixty-six million, six hundred eighty-one thousand, two hundred twenty-five".