672217725 has 24 divisors (see below), whose sum is σ = 1113366240. Its totient is φ = 357881920.

The previous prime is 672217703. The next prime is 672217727. The reversal of 672217725 is 527712276.

It is not a de Polignac number, because 672217725 - 2⁶ = 672217661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672217727) 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, 36391 + ... + 51659.

It is an arithmetic number, because the mean of its divisors is an integer number (46390260).

Almost surely, 2^672217725 is an apocalyptic number.

It is an amenable number.

672217725 is a deficient number, since it is larger than the sum of its proper divisors (441148515).

672217725 is a wasteful number, since it uses less digits than its factorization.

672217725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15869 (or 15864 counting only the distinct ones).

The product of its digits is 82320, while the sum is 39.

The square root of 672217725 is about 25927.1619156436. The cubic root of 672217725 is about 875.9984140731.

The spelling of 672217725 in words is "six hundred seventy-two million, two hundred seventeen thousand, seven hundred twenty-five".