25840365 has 16 divisors (see below), whose sum is σ = 42225408. Its totient is φ = 13487936.

The previous prime is 25840343. The next prime is 25840369. The reversal of 25840365 is 56304852.

It is a cyclic number.

It is not a de Polignac number, because 25840365 - 2⁶ = 25840301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25840369) 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 15 ways as a sum of consecutive naturals, for example, 17622 + ... + 19031.

It is an arithmetic number, because the mean of its divisors is an integer number (2639088).

Almost surely, 2^25840365 is an apocalyptic number.

It is an amenable number.

25840365 is a deficient number, since it is larger than the sum of its proper divisors (16385043).

25840365 is a wasteful number, since it uses less digits than its factorization.

25840365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36708.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 25840365 is about 5083.3419125611. The cubic root of 25840365 is about 295.6420565200.

The spelling of 25840365 in words is "twenty-five million, eight hundred forty thousand, three hundred sixty-five".