673778925 has 48 divisors (see below), whose sum is σ = 1241220160. Its totient is φ = 358344000.

The previous prime is 673778923. The next prime is 673778927. The reversal of 673778925 is 529877376.

It is an interprime number because it is at equal distance from previous prime (673778923) and next prime (673778927).

It is not a de Polignac number, because 673778925 - 2¹ = 673778923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673778923) 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 47 ways as a sum of consecutive naturals, for example, 282990 + ... + 285360.

Almost surely, 2^673778925 is an apocalyptic number.

It is an amenable number.

673778925 is a deficient number, since it is larger than the sum of its proper divisors (567441235).

673778925 is a wasteful number, since it uses less digits than its factorization.

673778925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811 (or 2800 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 54.

The square root of 673778925 is about 25957.2518768840. The cubic root of 673778925 is about 876.6760473743.

The spelling of 673778925 in words is "six hundred seventy-three million, seven hundred seventy-eight thousand, nine hundred twenty-five".