25021332 has 96 divisors (see below), whose sum is σ = 77414400. Its totient is φ = 6833376.

The previous prime is 25021327. The next prime is 25021363. The reversal of 25021332 is 23312052.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16669 + ... + 18107.

It is an arithmetic number, because the mean of its divisors is an integer number (806400).

Almost surely, 2^25021332 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 25021332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38707200).

25021332 is an abundant number, since it is smaller than the sum of its proper divisors (52393068).

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

25021332 is a wasteful number, since it uses less digits than its factorization.

25021332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482 (or 1474 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 25021332 is about 5002.1327451398. The cubic root of 25021332 is about 292.4849170395.

Adding to 25021332 its reverse (23312052), we get a palindrome (48333384).

The spelling of 25021332 in words is "twenty-five million, twenty-one thousand, three hundred thirty-two".