25540132 has 24 divisors (see below), whose sum is σ = 45726464. Its totient is φ = 12478752.

The previous prime is 25540127. The next prime is 25540133. The reversal of 25540132 is 23104552.

It is not an unprimeable number, because it can be changed into a prime (25540133) 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 7 ways as a sum of consecutive naturals, for example, 41773 + ... + 42379.

Almost surely, 2^25540132 is an apocalyptic number.

It is an amenable number.

25540132 is a deficient number, since it is larger than the sum of its proper divisors (20186332).

25540132 is a wasteful number, since it uses less digits than its factorization.

25540132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835 (or 833 counting only the distinct ones).

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

The square root of 25540132 is about 5053.7245670891. The cubic root of 25540132 is about 294.4925951501.

Adding to 25540132 its reverse (23104552), we get a palindrome (48644684).

The spelling of 25540132 in words is "twenty-five million, five hundred forty thousand, one hundred thirty-two".