25500132 has 72 divisors (see below), whose sum is σ = 75269376. Its totient is φ = 7127424.

The previous prime is 25500131. The next prime is 25500149. The reversal of 25500132 is 23100552.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25500131) 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 23 ways as a sum of consecutive naturals, for example, 10768 + ... + 12920.

It is an arithmetic number, because the mean of its divisors is an integer number (1045408).

Almost surely, 2^25500132 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 25500132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37634688).

25500132 is an abundant number, since it is smaller than the sum of its proper divisors (49769244).

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

25500132 is a wasteful number, since it uses less digits than its factorization.

25500132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217 (or 2212 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 25500132 is about 5049.7655391117. The cubic root of 25500132 is about 294.3387737211.

Adding to 25500132 its reverse (23100552), we get a palindrome (48600684).

The spelling of 25500132 in words is "twenty-five million, five hundred thousand, one hundred thirty-two".