25442141 has 4 divisors (see below), whose sum is σ = 25610784. Its totient is φ = 25273500.

The previous prime is 25442119. The next prime is 25442161. The reversal of 25442141 is 14124452.

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-25442141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25442101) 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, 84095 + ... + 84396.

It is an arithmetic number, because the mean of its divisors is an integer number (6402696).

Almost surely, 2^25442141 is an apocalyptic number.

It is an amenable number.

25442141 is a deficient number, since it is larger than the sum of its proper divisors (168643).

25442141 is a wasteful number, since it uses less digits than its factorization.

25442141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168642.

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

The square root of 25442141 is about 5044.0203211327. The cubic root of 25442141 is about 294.1154813433.

Adding to 25442141 its reverse (14124452), we get a palindrome (39566593).

The spelling of 25442141 in words is "twenty-five million, four hundred forty-two thousand, one hundred forty-one".