25445441 has 16 divisors (see below), whose sum is σ = 30307200. Its totient is φ = 20901888.

The previous prime is 25445437. The next prime is 25445443. The reversal of 25445441 is 14454452.

It is not a de Polignac number, because 25445441 - 2² = 25445437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (25445443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32705 + ... + 33473.

It is an arithmetic number, because the mean of its divisors is an integer number (1894200).

Almost surely, 2^25445441 is an apocalyptic number.

It is an amenable number.

25445441 is a deficient number, since it is larger than the sum of its proper divisors (4861759).

25445441 is a wasteful number, since it uses less digits than its factorization.

25445441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its digits is 12800, while the sum is 29.

The square root of 25445441 is about 5044.3474305404. The cubic root of 25445441 is about 294.1281969808.

Adding to 25445441 its reverse (14454452), we get a palindrome (39899893).

The spelling of 25445441 in words is "twenty-five million, four hundred forty-five thousand, four hundred forty-one".