25532340 has 96 divisors (see below), whose sum is σ = 74680704. Its totient is φ = 6512640.

The previous prime is 25532329. The next prime is 25532341. The reversal of 25532340 is 4323552.

It is a self number, because there is not a number n which added to its sum of digits gives 25532340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25532341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238567 + ... + 238673.

It is an arithmetic number, because the mean of its divisors is an integer number (777924).

Almost surely, 2^25532340 is an apocalyptic number.

25532340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25532340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37340352).

25532340 is an abundant number, since it is smaller than the sum of its proper divisors (49148364).

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

25532340 is a wasteful number, since it uses less digits than its factorization.

25532340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 25532340 is about 5052.9535917125. The cubic root of 25532340 is about 294.4626433381.

Adding to 25532340 its reverse (4323552), we get a palindrome (29855892).

The spelling of 25532340 in words is "twenty-five million, five hundred thirty-two thousand, three hundred forty".