25532140 has 24 divisors (see below), whose sum is σ = 53857440. Its totient is φ = 10167168.

The previous prime is 25532123. The next prime is 25532141. The reversal of 25532140 is 4123552.

It is not an unprimeable number, because it can be changed into a prime (25532141) 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 7 ways as a sum of consecutive naturals, for example, 1921 + ... + 7399.

It is an arithmetic number, because the mean of its divisors is an integer number (2244060).

Almost surely, 2^25532140 is an apocalyptic number.

25532140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25532140 is an abundant number, since it is smaller than the sum of its proper divisors (28325300).

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

25532140 is a wasteful number, since it uses less digits than its factorization.

25532140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721 (or 5719 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25532140 is about 5052.9338012683. The cubic root of 25532140 is about 294.4618744742.

Adding to 25532140 its reverse (4123552), we get a palindrome (29655692).

The spelling of 25532140 in words is "twenty-five million, five hundred thirty-two thousand, one hundred forty".