25871039 has 2 divisors, whose sum is σ = 25871040. Its totient is φ = 25871038.

The previous prime is 25871023. The next prime is 25871057. The reversal of 25871039 is 93017852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25871039 - 2⁴ = 25871023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25871089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12935519 + 12935520.

It is an arithmetic number, because the mean of its divisors is an integer number (12935520).

Almost surely, 2^25871039 is an apocalyptic number.

25871039 is a deficient number, since it is larger than the sum of its proper divisors (1).

25871039 is an equidigital number, since it uses as much as digits as its factorization.

25871039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 25871039 is about 5086.3581273835. The cubic root of 25871039 is about 295.7589916396.

The spelling of 25871039 in words is "twenty-five million, eight hundred seventy-one thousand, thirty-nine".