25765651 has 2 divisors, whose sum is σ = 25765652. Its totient is φ = 25765650.

The previous prime is 25765639. The next prime is 25765669. The reversal of 25765651 is 15656752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25765651 - 2¹¹ = 25763603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25765651.

It is not a weakly prime, because it can be changed into another prime (25765631) 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 as a sum of consecutive naturals, namely, 12882825 + 12882826.

It is an arithmetic number, because the mean of its divisors is an integer number (12882826).

Almost surely, 2^25765651 is an apocalyptic number.

25765651 is a deficient number, since it is larger than the sum of its proper divisors (1).

25765651 is an equidigital number, since it uses as much as digits as its factorization.

25765651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 37.

The square root of 25765651 is about 5075.9876871403. The cubic root of 25765651 is about 295.3568448156.

The spelling of 25765651 in words is "twenty-five million, seven hundred sixty-five thousand, six hundred fifty-one".