25571339 has 2 divisors, whose sum is σ = 25571340. Its totient is φ = 25571338.

The previous prime is 25571333. The next prime is 25571341. The reversal of 25571339 is 93317552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25571339 - 2⁸ = 25571083 is a prime.

Together with 25571341, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25571299 and 25571308.

It is not a weakly prime, because it can be changed into another prime (25571333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12785669 + 12785670.

It is an arithmetic number, because the mean of its divisors is an integer number (12785670).

Almost surely, 2^25571339 is an apocalyptic number.

25571339 is a deficient number, since it is larger than the sum of its proper divisors (1).

25571339 is an equidigital number, since it uses as much as digits as its factorization.

25571339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28350, while the sum is 35.

The square root of 25571339 is about 5056.8111493312. The cubic root of 25571339 is about 294.6124912915.

The spelling of 25571339 in words is "twenty-five million, five hundred seventy-one thousand, three hundred thirty-nine".