25421441 has 4 divisors (see below), whose sum is σ = 25439232. Its totient is φ = 25403652.

The previous prime is 25421423. The next prime is 25421453. The reversal of 25421441 is 14412452.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25421441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25421741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6545 + ... + 9678.

It is an arithmetic number, because the mean of its divisors is an integer number (6359808).

Almost surely, 2^25421441 is an apocalyptic number.

It is an amenable number.

25421441 is a deficient number, since it is larger than the sum of its proper divisors (17791).

25421441 is a wasteful number, since it uses less digits than its factorization.

25421441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17790.

The product of its digits is 1280, while the sum is 23.

The square root of 25421441 is about 5041.9679689582. The cubic root of 25421441 is about 294.0356945262.

Adding to 25421441 its reverse (14412452), we get a palindrome (39833893).

The spelling of 25421441 in words is "twenty-five million, four hundred twenty-one thousand, four hundred forty-one".