25644132 has 36 divisors (see below), whose sum is σ = 64977276. Its totient is φ = 8527680.

The previous prime is 25644121. The next prime is 25644133. The reversal of 25644132 is 23144652.

25644132 is a `hidden beast` number, since 2 + 5 + 644 + 13 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15872256 + 9771876 = 3984^2 + 3126^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 25644096 and 25644105.

It is not an unprimeable number, because it can be changed into a prime (25644133) 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 11 ways as a sum of consecutive naturals, for example, 26782 + ... + 27722.

Almost surely, 2^25644132 is an apocalyptic number.

It is an amenable number.

25644132 is an abundant number, since it is smaller than the sum of its proper divisors (39333144).

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

25644132 is a wasteful number, since it uses less digits than its factorization.

25644132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708 (or 1703 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 25644132 is about 5064.0035545011. The cubic root of 25644132 is about 294.8917806632.

Adding to 25644132 its reverse (23144652), we get a palindrome (48788784).

The spelling of 25644132 in words is "twenty-five million, six hundred forty-four thousand, one hundred thirty-two".