76720825 has 12 divisors (see below), whose sum is σ = 96475968. Its totient is φ = 60510800.

The previous prime is 76720817. The next prime is 76720867. The reversal of 76720825 is 52802767.

It is not a de Polignac number, because 76720825 - 2³ = 76720817 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, 19837 + ... + 23386.

It is an arithmetic number, because the mean of its divisors is an integer number (8039664).

Almost surely, 2^76720825 is an apocalyptic number.

It is an amenable number.

76720825 is a deficient number, since it is larger than the sum of its proper divisors (19755143).

76720825 is a wasteful number, since it uses less digits than its factorization.

76720825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43304 (or 43299 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 76720825 is about 8759.0424704987. The cubic root of 76720825 is about 424.9173080178.

The spelling of 76720825 in words is "seventy-six million, seven hundred twenty thousand, eight hundred twenty-five".