25644130 has 16 divisors (see below), whose sum is σ = 47649024. Its totient is φ = 9926640.

The previous prime is 25644121. The next prime is 25644133. The reversal of 25644130 is 3144652.

It is a junction number, because it is equal to n+sod(n) for n = 25644095 and 25644104.

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 7 ways as a sum of consecutive naturals, for example, 41052 + ... + 41671.

It is an arithmetic number, because the mean of its divisors is an integer number (2978064).

Almost surely, 2^25644130 is an apocalyptic number.

25644130 is a deficient number, since it is larger than the sum of its proper divisors (22004894).

25644130 is a wasteful number, since it uses less digits than its factorization.

25644130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82761.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 25644130 is about 5064.0033570289. The cubic root of 25644130 is about 294.8917729970.

Adding to 25644130 its reverse (3144652), we get a palindrome (28788782).

The spelling of 25644130 in words is "twenty-five million, six hundred forty-four thousand, one hundred thirty".