25889530 has 16 divisors (see below), whose sum is σ = 46959264. Its totient is φ = 10276240.

The previous prime is 25889459. The next prime is 25889531. The reversal of 25889530 is 3598852.

It is not an unprimeable number, because it can be changed into a prime (25889531) 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, 8572 + ... + 11191.

It is an arithmetic number, because the mean of its divisors is an integer number (2934954).

Almost surely, 2^25889530 is an apocalyptic number.

25889530 is a deficient number, since it is larger than the sum of its proper divisors (21069734).

25889530 is a wasteful number, since it uses less digits than its factorization.

25889530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19901.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 25889530 is about 5088.1755079793. The cubic root of 25889530 is about 295.8294381995.

The spelling of 25889530 in words is "twenty-five million, eight hundred eighty-nine thousand, five hundred thirty".