25802851 has 2 divisors, whose sum is σ = 25802852. Its totient is φ = 25802850.

The previous prime is 25802831. The next prime is 25802857. The reversal of 25802851 is 15820852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25802851 is a prime.

It is not a weakly prime, because it can be changed into another prime (25802857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12901425 + 12901426.

It is an arithmetic number, because the mean of its divisors is an integer number (12901426).

Almost surely, 2^25802851 is an apocalyptic number.

25802851 is a deficient number, since it is larger than the sum of its proper divisors (1).

25802851 is an equidigital number, since it uses as much as digits as its factorization.

25802851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 25802851 is about 5079.6506769659. The cubic root of 25802851 is about 295.4989201587.

The spelling of 25802851 in words is "twenty-five million, eight hundred two thousand, eight hundred fifty-one".