25218132 has 48 divisors (see below), whose sum is σ = 61162752. Its totient is φ = 8081280.

The previous prime is 25218113. The next prime is 25218133. The reversal of 25218132 is 23181252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25218133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34038 + ... + 34770.

It is an arithmetic number, because the mean of its divisors is an integer number (1274224).

Almost surely, 2^25218132 is an apocalyptic number.

It is an amenable number.

25218132 is an abundant number, since it is smaller than the sum of its proper divisors (35944620).

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

25218132 is a wasteful number, since it uses less digits than its factorization.

25218132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848 (or 846 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 25218132 is about 5021.7658248867. The cubic root of 25218132 is about 293.2497414472.

Adding to 25218132 its reverse (23181252), we get a palindrome (48399384).

The spelling of 25218132 in words is "twenty-five million, two hundred eighteen thousand, one hundred thirty-two".