25071289 has 2 divisors, whose sum is σ = 25071290. Its totient is φ = 25071288.

The previous prime is 25071287. The next prime is 25071301. The reversal of 25071289 is 98217052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25000000 + 71289 = 5000^2 + 267^2 .

It is a cyclic number.

It is not a de Polignac number, because 25071289 - 2¹ = 25071287 is a prime.

It is a super-4 number, since 4×25071289⁴ (a number of 31 digits) contains 4444 as substring.

Together with 25071287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25071287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12535644 + 12535645.

It is an arithmetic number, because the mean of its divisors is an integer number (12535645).

Almost surely, 2^25071289 is an apocalyptic number.

It is an amenable number.

25071289 is a deficient number, since it is larger than the sum of its proper divisors (1).

25071289 is an equidigital number, since it uses as much as digits as its factorization.

25071289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 25071289 is about 5007.1238251116. The cubic root of 25071289 is about 292.6794437915.

The spelling of 25071289 in words is "twenty-five million, seventy-one thousand, two hundred eighty-nine".