25888997 has 2 divisors, whose sum is σ = 25888998. Its totient is φ = 25888996.

The previous prime is 25888987. The next prime is 25889021. The reversal of 25888997 is 79988852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20124196 + 5764801 = 4486^2 + 2401^2 .

It is a cyclic number.

It is not a de Polignac number, because 25888997 - 2⁴ = 25888981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25888927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12944498 + 12944499.

It is an arithmetic number, because the mean of its divisors is an integer number (12944499).

Almost surely, 2^25888997 is an apocalyptic number.

It is an amenable number.

25888997 is a deficient number, since it is larger than the sum of its proper divisors (1).

25888997 is an equidigital number, since it uses as much as digits as its factorization.

25888997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 56.

The square root of 25888997 is about 5088.1231313717. The cubic root of 25888997 is about 295.8274080587.

The spelling of 25888997 in words is "twenty-five million, eight hundred eighty-eight thousand, nine hundred ninety-seven".