25287893 has 2 divisors, whose sum is σ = 25287894. Its totient is φ = 25287892.

The previous prime is 25287887. The next prime is 25287901. The reversal of 25287893 is 39878252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22108804 + 3179089 = 4702^2 + 1783^2 .

It is a cyclic number.

It is not a de Polignac number, because 25287893 - 2⁸ = 25287637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25287193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12643946 + 12643947.

It is an arithmetic number, because the mean of its divisors is an integer number (12643947).

Almost surely, 2^25287893 is an apocalyptic number.

It is an amenable number.

25287893 is a deficient number, since it is larger than the sum of its proper divisors (1).

25287893 is an equidigital number, since it uses as much as digits as its factorization.

25287893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 25287893 is about 5028.7068914384. The cubic root of 25287893 is about 293.5198983904.

The spelling of 25287893 in words is "twenty-five million, two hundred eighty-seven thousand, eight hundred ninety-three".