25802831 has 2 divisors, whose sum is σ = 25802832. Its totient is φ = 25802830.

The previous prime is 25802809. The next prime is 25802851. The reversal of 25802831 is 13820852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25802831 - 2²² = 21608527 is a prime.

It is a super-2 number, since 2×25802831² = 1331572175229122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25802794 and 25802803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25802851) 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, 12901415 + 12901416.

It is an arithmetic number, because the mean of its divisors is an integer number (12901416).

Almost surely, 2^25802831 is an apocalyptic number.

25802831 is a deficient number, since it is larger than the sum of its proper divisors (1).

25802831 is an equidigital number, since it uses as much as digits as its factorization.

25802831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 25802831 is about 5079.6487083262. The cubic root of 25802831 is about 295.4988438108.

The spelling of 25802831 in words is "twenty-five million, eight hundred two thousand, eight hundred thirty-one".