25987873 has 2 divisors, whose sum is σ = 25987874. Its totient is φ = 25987872.

The previous prime is 25987859. The next prime is 25987879. The reversal of 25987873 is 37878952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25979409 + 8464 = 5097^2 + 92^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25987873 is a prime.

It is not a weakly prime, because it can be changed into another prime (25987879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12993936 + 12993937.

It is an arithmetic number, because the mean of its divisors is an integer number (12993937).

Almost surely, 2^25987873 is an apocalyptic number.

It is an amenable number.

25987873 is a deficient number, since it is larger than the sum of its proper divisors (1).

25987873 is an equidigital number, since it uses as much as digits as its factorization.

25987873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The square root of 25987873 is about 5097.8302247133. The cubic root of 25987873 is about 296.2035404601.

The spelling of 25987873 in words is "twenty-five million, nine hundred eighty-seven thousand, eight hundred seventy-three".