25980172 has 18 divisors (see below), whose sum is σ = 47093228. Its totient is φ = 12540528.

The previous prime is 25980167. The next prime is 25980173. The reversal of 25980172 is 27108952.

It is not an unprimeable number, because it can be changed into a prime (25980173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 498 + ... + 7225.

Almost surely, 2^25980172 is an apocalyptic number.

It is an amenable number.

25980172 is a deficient number, since it is larger than the sum of its proper divisors (21113056).

25980172 is a wasteful number, since it uses less digits than its factorization.

25980172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7785 (or 7754 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 25980172 is about 5097.0748474002. The cubic root of 25980172 is about 296.1742795196.

The spelling of 25980172 in words is "twenty-five million, nine hundred eighty thousand, one hundred seventy-two".