672889625 has 16 divisors (see below), whose sum is σ = 842798736. Its totient is φ = 536368000.

The previous prime is 672889589. The next prime is 672889667. The reversal of 672889625 is 526988276.

672889625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 360696064 + 312193561 = 18992^2 + 17669^2 .

It is not a de Polignac number, because 672889625 - 2⁸ = 672889369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25547 + ... + 44703.

It is an arithmetic number, because the mean of its divisors is an integer number (52674921).

Almost surely, 2^672889625 is an apocalyptic number.

It is an amenable number.

672889625 is a deficient number, since it is larger than the sum of its proper divisors (169909111).

672889625 is a wasteful number, since it uses less digits than its factorization.

672889625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19453 (or 19443 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 53.

The square root of 672889625 is about 25940.1161331248. The cubic root of 672889625 is about 876.2901783432.

The spelling of 672889625 in words is "six hundred seventy-two million, eight hundred eighty-nine thousand, six hundred twenty-five".