25648765 has 8 divisors (see below), whose sum is σ = 32398560. Its totient is φ = 19438992.

The previous prime is 25648747. The next prime is 25648781. The reversal of 25648765 is 56784652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25648765 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134899 + ... + 135088.

It is an arithmetic number, because the mean of its divisors is an integer number (4049820).

Almost surely, 2^25648765 is an apocalyptic number.

It is an amenable number.

25648765 is a deficient number, since it is larger than the sum of its proper divisors (6749795).

25648765 is a wasteful number, since it uses less digits than its factorization.

25648765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270011.

The product of its digits is 403200, while the sum is 43.

The square root of 25648765 is about 5064.4609782286. The cubic root of 25648765 is about 294.9095384795.

The spelling of 25648765 in words is "twenty-five million, six hundred forty-eight thousand, seven hundred sixty-five".