25235172 has 72 divisors (see below), whose sum is σ = 67541600. Its totient is φ = 8147520.

The previous prime is 25235167. The next prime is 25235179. The reversal of 25235172 is 27153252.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25235179) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181479 + ... + 181617.

Almost surely, 2^25235172 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 25235172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33770800).

25235172 is an abundant number, since it is smaller than the sum of its proper divisors (42306428).

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

25235172 is a wasteful number, since it uses less digits than its factorization.

25235172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 185 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 25235172 is about 5023.4621527389. The cubic root of 25235172 is about 293.3157766122.

The spelling of 25235172 in words is "twenty-five million, two hundred thirty-five thousand, one hundred seventy-two".