678005925 has 12 divisors (see below), whose sum is σ = 1120969920. Its totient is φ = 361603120.

The previous prime is 678005921. The next prime is 678005927. The reversal of 678005925 is 529500876.

It is not a de Polignac number, because 678005925 - 2² = 678005921 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678005921) by changing a digit.

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, 4519965 + ... + 4520114.

It is an arithmetic number, because the mean of its divisors is an integer number (93414160).

Almost surely, 2^678005925 is an apocalyptic number.

It is an amenable number.

678005925 is a deficient number, since it is larger than the sum of its proper divisors (442963995).

678005925 is a wasteful number, since it uses less digits than its factorization.

678005925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9040092 (or 9040087 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 678005925 is about 26038.5469064616. The cubic root of 678005925 is about 878.5055234172.

The spelling of 678005925 in words is "six hundred seventy-eight million, five thousand, nine hundred twenty-five".