25173117 has 12 divisors (see below), whose sum is σ = 36978240. Its totient is φ = 16497288.

The previous prime is 25173089. The next prime is 25173143. The reversal of 25173117 is 71137152.

It is a happy number.

It is not a de Polignac number, because 25173117 - 2⁷ = 25172989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25171117) 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 11 ways as a sum of consecutive naturals, for example, 23173 + ... + 24234.

It is an arithmetic number, because the mean of its divisors is an integer number (3081520).

Almost surely, 2^25173117 is an apocalyptic number.

It is an amenable number.

25173117 is a deficient number, since it is larger than the sum of its proper divisors (11805123).

25173117 is a wasteful number, since it uses less digits than its factorization.

25173117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47472 (or 47469 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 25173117 is about 5017.2818338220. The cubic root of 25173117 is about 293.0751514683.

The spelling of 25173117 in words is "twenty-five million, one hundred seventy-three thousand, one hundred seventeen".