25173213 has 8 divisors (see below), whose sum is σ = 36146208. Its totient is φ = 15491184.

The previous prime is 25173199. The next prime is 25173229. The reversal of 25173213 is 31237152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25173213 - 2²⁴ = 8395997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25173013) 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 7 ways as a sum of consecutive naturals, for example, 322695 + ... + 322772.

It is an arithmetic number, because the mean of its divisors is an integer number (4518276).

Almost surely, 2^25173213 is an apocalyptic number.

It is an amenable number.

25173213 is a deficient number, since it is larger than the sum of its proper divisors (10972995).

25173213 is a wasteful number, since it uses less digits than its factorization.

25173213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645483.

The product of its digits is 1260, while the sum is 24.

The square root of 25173213 is about 5017.2914007460. The cubic root of 25173213 is about 293.0755240242.

The spelling of 25173213 in words is "twenty-five million, one hundred seventy-three thousand, two hundred thirteen".