25985749 has 16 divisors (see below), whose sum is σ = 28152000. Its totient is φ = 23912064.

The previous prime is 25985747. The next prime is 25985761. The reversal of 25985749 is 94758952.

It is a cyclic number.

It is not a de Polignac number, because 25985749 - 2¹ = 25985747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25985747) 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, 174327 + ... + 174475.

It is an arithmetic number, because the mean of its divisors is an integer number (1759500).

Almost surely, 2^25985749 is an apocalyptic number.

It is an amenable number.

25985749 is a deficient number, since it is larger than the sum of its proper divisors (2166251).

25985749 is a wasteful number, since it uses less digits than its factorization.

25985749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372.

The product of its digits is 907200, while the sum is 49.

The square root of 25985749 is about 5097.6218965318. The cubic root of 25985749 is about 296.1954706262.

The spelling of 25985749 in words is "twenty-five million, nine hundred eighty-five thousand, seven hundred forty-nine".