25540041 has 4 divisors (see below), whose sum is σ = 34053392. Its totient is φ = 17026692.

The previous prime is 25540037. The next prime is 25540043. The reversal of 25540041 is 14004552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25540041 - 2² = 25540037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25540043) 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 in 3 ways as a sum of consecutive naturals, for example, 4256671 + ... + 4256676.

It is an arithmetic number, because the mean of its divisors is an integer number (8513348).

Almost surely, 2^25540041 is an apocalyptic number.

It is an amenable number.

25540041 is a deficient number, since it is larger than the sum of its proper divisors (8513351).

25540041 is an equidigital number, since it uses as much as digits as its factorization.

25540041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8513350.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 25540041 is about 5053.7155638203. The cubic root of 25540041 is about 294.4922453887.

Adding to 25540041 its reverse (14004552), we get a palindrome (39544593).

The spelling of 25540041 in words is "twenty-five million, five hundred forty thousand, forty-one".