25544287 has 2 divisors, whose sum is σ = 25544288. Its totient is φ = 25544286.

The previous prime is 25544269. The next prime is 25544291. The reversal of 25544287 is 78244552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25544287 - 2¹⁹ = 25019999 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25544257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12772143 + 12772144.

It is an arithmetic number, because the mean of its divisors is an integer number (12772144).

Almost surely, 2^25544287 is an apocalyptic number.

25544287 is a deficient number, since it is larger than the sum of its proper divisors (1).

25544287 is an equidigital number, since it uses as much as digits as its factorization.

25544287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89600, while the sum is 37.

The square root of 25544287 is about 5054.1356333205. The cubic root of 25544287 is about 294.5085641407.

The spelling of 25544287 in words is "twenty-five million, five hundred forty-four thousand, two hundred eighty-seven".