25250543 has 2 divisors, whose sum is σ = 25250544. Its totient is φ = 25250542.

The previous prime is 25250531. The next prime is 25250579. The reversal of 25250543 is 34505252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25250543 - 2¹⁰ = 25249519 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25250143) 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, 12625271 + 12625272.

It is an arithmetic number, because the mean of its divisors is an integer number (12625272).

Almost surely, 2^25250543 is an apocalyptic number.

25250543 is a deficient number, since it is larger than the sum of its proper divisors (1).

25250543 is an equidigital number, since it uses as much as digits as its factorization.

25250543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 25250543 is about 5024.9918407894. The cubic root of 25250543 is about 293.3753183992.

Adding to 25250543 its reverse (34505252), we get a palindrome (59755795).

The spelling of 25250543 in words is "twenty-five million, two hundred fifty thousand, five hundred forty-three".