25650851 has 2 divisors, whose sum is σ = 25650852. Its totient is φ = 25650850.

The previous prime is 25650829. The next prime is 25650881. The reversal of 25650851 is 15805652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25650851 - 2⁶ = 25650787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25650881) 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 as a sum of consecutive naturals, namely, 12825425 + 12825426.

It is an arithmetic number, because the mean of its divisors is an integer number (12825426).

Almost surely, 2^25650851 is an apocalyptic number.

25650851 is a deficient number, since it is larger than the sum of its proper divisors (1).

25650851 is an equidigital number, since it uses as much as digits as its factorization.

25650851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 25650851 is about 5064.6669189592. Note that the first 3 decimals coincide. The cubic root of 25650851 is about 294.9175332065.

The spelling of 25650851 in words is "twenty-five million, six hundred fifty thousand, eight hundred fifty-one".