25173328 has 40 divisors (see below), whose sum is σ = 54371520. Its totient is φ = 11220480.

The previous prime is 25173259. The next prime is 25173329. The reversal of 25173328 is 82337152.

It is a self number, because there is not a number n which added to its sum of digits gives 25173328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25173329) 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, 2733 + ... + 7603.

It is an arithmetic number, because the mean of its divisors is an integer number (1359288).

Almost surely, 2^25173328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25173328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27185760).

25173328 is an abundant number, since it is smaller than the sum of its proper divisors (29198192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25173328 is a wasteful number, since it uses less digits than its factorization.

25173328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4915 (or 4909 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 25173328 is about 5017.3028610998. The cubic root of 25173328 is about 293.0759703139.

The spelling of 25173328 in words is "twenty-five million, one hundred seventy-three thousand, three hundred twenty-eight".