25084861 has 2 divisors, whose sum is σ = 25084862. Its totient is φ = 25084860.

The previous prime is 25084849. The next prime is 25084901. The reversal of 25084861 is 16848052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21104836 + 3980025 = 4594^2 + 1995^2 .

It is a cyclic number.

It is not a de Polignac number, because 25084861 - 2⁹ = 25084349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25084811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12542430 + 12542431.

It is an arithmetic number, because the mean of its divisors is an integer number (12542431).

Almost surely, 2^25084861 is an apocalyptic number.

It is an amenable number.

25084861 is a deficient number, since it is larger than the sum of its proper divisors (1).

25084861 is an equidigital number, since it uses as much as digits as its factorization.

25084861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 25084861 is about 5008.4789108072. The cubic root of 25084861 is about 292.7322469382.

The spelling of 25084861 in words is "twenty-five million, eighty-four thousand, eight hundred sixty-one".