25386539 has 4 divisors (see below), whose sum is σ = 25533456. Its totient is φ = 25239624.

The previous prime is 25386497. The next prime is 25386541. The reversal of 25386539 is 93568352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25386539 - 2¹² = 25382443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25386496 and 25386505.

It is not an unprimeable number, because it can be changed into a prime (25386589) 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 3 ways as a sum of consecutive naturals, for example, 73199 + ... + 73544.

It is an arithmetic number, because the mean of its divisors is an integer number (6383364).

Almost surely, 2^25386539 is an apocalyptic number.

25386539 is a deficient number, since it is larger than the sum of its proper divisors (146917).

25386539 is a wasteful number, since it uses less digits than its factorization.

25386539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146916.

The product of its digits is 194400, while the sum is 41.

The square root of 25386539 is about 5038.5056316333. The cubic root of 25386539 is about 293.9010688776.

The spelling of 25386539 in words is "twenty-five million, three hundred eighty-six thousand, five hundred thirty-nine".