25595538 has 16 divisors (see below), whose sum is σ = 51242976. Its totient is φ = 8523200.

The previous prime is 25595533. The next prime is 25595543. The reversal of 25595538 is 83559552.

It is an interprime number because it is at equal distance from previous prime (25595533) and next prime (25595543).

It is a self number, because there is not a number n which added to its sum of digits gives 25595538.

It is not an unprimeable number, because it can be changed into a prime (25595533) 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, 7738 + ... + 10538.

It is an arithmetic number, because the mean of its divisors is an integer number (3202686).

Almost surely, 2^25595538 is an apocalyptic number.

25595538 is an abundant number, since it is smaller than the sum of its proper divisors (25647438).

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

25595538 is a wasteful number, since it uses less digits than its factorization.

25595538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4329.

The product of its digits is 270000, while the sum is 42.

The square root of 25595538 is about 5059.2032969629. The cubic root of 25595538 is about 294.7053958249.

The spelling of 25595538 in words is "twenty-five million, five hundred ninety-five thousand, five hundred thirty-eight".