25702889 has 2 divisors, whose sum is σ = 25702890. Its totient is φ = 25702888.

The previous prime is 25702883. The next prime is 25702913. The reversal of 25702889 is 98820752.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25050025 + 652864 = 5005^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 25702889 - 2²⁰ = 24654313 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25702883) 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, 12851444 + 12851445.

It is an arithmetic number, because the mean of its divisors is an integer number (12851445).

Almost surely, 2^25702889 is an apocalyptic number.

It is an amenable number.

25702889 is a deficient number, since it is larger than the sum of its proper divisors (1).

25702889 is an equidigital number, since it uses as much as digits as its factorization.

25702889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 25702889 is about 5069.8016726495. The cubic root of 25702889 is about 295.1168320153.

The spelling of 25702889 in words is "twenty-five million, seven hundred two thousand, eight hundred eighty-nine".