25538164 has 6 divisors (see below), whose sum is σ = 44691794. Its totient is φ = 12769080.

The previous prime is 25538099. The next prime is 25538167. The reversal of 25538164 is 46183552.

It can be written as a sum of positive squares in only one way, i.e., 19873764 + 5664400 = 4458^2 + 2380^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25538167) 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 as a sum of consecutive naturals, namely, 3192267 + ... + 3192274.

Almost surely, 2^25538164 is an apocalyptic number.

It is an amenable number.

25538164 is a deficient number, since it is larger than the sum of its proper divisors (19153630).

25538164 is a wasteful number, since it uses less digits than its factorization.

25538164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6384545 (or 6384543 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 25538164 is about 5053.5298554575. The cubic root of 25538164 is about 294.4850308938.

The spelling of 25538164 in words is "twenty-five million, five hundred thirty-eight thousand, one hundred sixty-four".