25826551 has 2 divisors, whose sum is σ = 25826552. Its totient is φ = 25826550.

The previous prime is 25826543. The next prime is 25826561. The reversal of 25826551 is 15562852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25826551 - 2³ = 25826543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25826561) 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, 12913275 + 12913276.

It is an arithmetic number, because the mean of its divisors is an integer number (12913276).

Almost surely, 2^25826551 is an apocalyptic number.

25826551 is a deficient number, since it is larger than the sum of its proper divisors (1).

25826551 is an equidigital number, since it uses as much as digits as its factorization.

25826551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 34.

The square root of 25826551 is about 5081.9829791136. The cubic root of 25826551 is about 295.5893647031.

The spelling of 25826551 in words is "twenty-five million, eight hundred twenty-six thousand, five hundred fifty-one".