680778825 has 24 divisors (see below), whose sum is σ = 1127526048. Its totient is φ = 362446080.

The previous prime is 680778803. The next prime is 680778827. The reversal of 680778825 is 528877086.

It is not a de Polignac number, because 680778825 - 2⁷ = 680778697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (680778827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36822 + ... + 52128.

It is an arithmetic number, because the mean of its divisors is an integer number (46980252).

Almost surely, 2^680778825 is an apocalyptic number.

It is an amenable number.

680778825 is a deficient number, since it is larger than the sum of its proper divisors (446747223).

680778825 is a wasteful number, since it uses less digits than its factorization.

680778825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15913 (or 15908 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 51.

The square root of 680778825 is about 26091.7386350546. The cubic root of 680778825 is about 879.7015279962.

The spelling of 680778825 in words is "six hundred eighty million, seven hundred seventy-eight thousand, eight hundred twenty-five".