25884139 has 2 divisors, whose sum is σ = 25884140. Its totient is φ = 25884138.

The previous prime is 25884109. The next prime is 25884167. The reversal of 25884139 is 93148852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25884139 - 2⁵ = 25884107 is a prime.

It is not a weakly prime, because it can be changed into another prime (25884109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12942069 + 12942070.

It is an arithmetic number, because the mean of its divisors is an integer number (12942070).

Almost surely, 2^25884139 is an apocalyptic number.

25884139 is a deficient number, since it is larger than the sum of its proper divisors (1).

25884139 is an equidigital number, since it uses as much as digits as its factorization.

25884139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 40.

The square root of 25884139 is about 5087.6457227287. The cubic root of 25884139 is about 295.8089031645.

The spelling of 25884139 in words is "twenty-five million, eight hundred eighty-four thousand, one hundred thirty-nine".