76780825 has 12 divisors (see below), whose sum is σ = 103863888. Its totient is φ = 55840400.

The previous prime is 76780819. The next prime is 76780829. The reversal of 76780825 is 52808767.

It is a happy number.

It is not a de Polignac number, because 76780825 - 2³ = 76780817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76780829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139327 + ... + 139876.

It is an arithmetic number, because the mean of its divisors is an integer number (8655324).

Almost surely, 2^76780825 is an apocalyptic number.

It is an amenable number.

76780825 is a deficient number, since it is larger than the sum of its proper divisors (27083063).

76780825 is a wasteful number, since it uses less digits than its factorization.

76780825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279224 (or 279219 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 76780825 is about 8762.4668330328. The cubic root of 76780825 is about 425.0280488985.

The spelling of 76780825 in words is "seventy-six million, seven hundred eighty thousand, eight hundred twenty-five".