766646225025 has 24 divisors (see below), whose sum is σ = 1311229409280. Its totient is φ = 394778744640.

The previous prime is 766646225017. The next prime is 766646225029. The reversal of 766646225025 is 520522646667.

It is not a de Polignac number, because 766646225025 - 2³ = 766646225017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (766646225029) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 176238337 + ... + 176242686.

It is an arithmetic number, because the mean of its divisors is an integer number (54634558720).

Almost surely, 2^766646225025 is an apocalyptic number.

766646225025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

766646225025 is a deficient number, since it is larger than the sum of its proper divisors (544583184255).

766646225025 is a wasteful number, since it uses less digits than its factorization.

766646225025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352481065 (or 352481060 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 51.

The spelling of 766646225025 in words is "seven hundred sixty-six billion, six hundred forty-six million, two hundred twenty-five thousand, twenty-five".