25212173 has 8 divisors (see below), whose sum is σ = 30508992. Its totient is φ = 20339136.

The previous prime is 25212149. The next prime is 25212193. The reversal of 25212173 is 37121252.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25212173 - 2¹⁰ = 25211149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25212113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105815 + ... + 106052.

It is an arithmetic number, because the mean of its divisors is an integer number (3813624).

Almost surely, 2^25212173 is an apocalyptic number.

It is an amenable number.

25212173 is a deficient number, since it is larger than the sum of its proper divisors (5296819).

25212173 is a wasteful number, since it uses less digits than its factorization.

25212173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211891.

The product of its digits is 840, while the sum is 23.

The square root of 25212173 is about 5021.1724726402. The cubic root of 25212173 is about 293.2266414958.

The spelling of 25212173 in words is "twenty-five million, two hundred twelve thousand, one hundred seventy-three".