25289438 has 16 divisors (see below), whose sum is σ = 40323744. Its totient is φ = 11854080.

The previous prime is 25289377. The next prime is 25289477. The reversal of 25289438 is 83498252.

It is a junction number, because it is equal to n+sod(n) for n = 25289395 and 25289404.

It is a congruent number.

It is an unprimeable number.

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, 8231 + ... + 10877.

It is an arithmetic number, because the mean of its divisors is an integer number (2520234).

Almost surely, 2^25289438 is an apocalyptic number.

25289438 is a deficient number, since it is larger than the sum of its proper divisors (15034306).

25289438 is a wasteful number, since it uses less digits than its factorization.

25289438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947.

The product of its digits is 138240, while the sum is 41.

The square root of 25289438 is about 5028.8605071129. The cubic root of 25289438 is about 293.5258759414.

The spelling of 25289438 in words is "twenty-five million, two hundred eighty-nine thousand, four hundred thirty-eight".