25550843 has 2 divisors, whose sum is σ = 25550844. Its totient is φ = 25550842.

The previous prime is 25550821. The next prime is 25550849. The reversal of 25550843 is 34805552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25550843 is a prime.

It is not a weakly prime, because it can be changed into another prime (25550849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12775421 + 12775422.

It is an arithmetic number, because the mean of its divisors is an integer number (12775422).

Almost surely, 2^25550843 is an apocalyptic number.

25550843 is a deficient number, since it is larger than the sum of its proper divisors (1).

25550843 is an equidigital number, since it uses as much as digits as its factorization.

25550843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 25550843 is about 5054.7841694775. The cubic root of 25550843 is about 294.5337574190.

The spelling of 25550843 in words is "twenty-five million, five hundred fifty thousand, eight hundred forty-three".