25724589 has 16 divisors (see below), whose sum is σ = 38332224. Its totient is φ = 15209600.

The previous prime is 25724549. The next prime is 25724593. The reversal of 25724589 is 98542752.

It is a cyclic number.

It is not a de Polignac number, because 25724589 - 2⁸ = 25724333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25724589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25724539) 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 15 ways as a sum of consecutive naturals, for example, 8154 + ... + 10859.

It is an arithmetic number, because the mean of its divisors is an integer number (2395764).

Almost surely, 2^25724589 is an apocalyptic number.

It is an amenable number.

25724589 is a deficient number, since it is larger than the sum of its proper divisors (12607635).

25724589 is a wasteful number, since it uses less digits than its factorization.

25724589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19068.

The product of its digits is 201600, while the sum is 42.

The square root of 25724589 is about 5071.9413442981. The cubic root of 25724589 is about 295.1998607347.

The spelling of 25724589 in words is "twenty-five million, seven hundred twenty-four thousand, five hundred eighty-nine".