25439441 has 4 divisors (see below), whose sum is σ = 25457472. Its totient is φ = 25421412.

The previous prime is 25439413. The next prime is 25439459. The reversal of 25439441 is 14493452.

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 not a de Polignac number, because 25439441 - 2¹⁰ = 25438417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25439398 and 25439407.

It is not an unprimeable number, because it can be changed into a prime (25439471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6701 + ... + 9786.

It is an arithmetic number, because the mean of its divisors is an integer number (6364368).

Almost surely, 2^25439441 is an apocalyptic number.

It is an amenable number.

25439441 is a deficient number, since it is larger than the sum of its proper divisors (18031).

25439441 is a wasteful number, since it uses less digits than its factorization.

25439441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18030.

The product of its digits is 17280, while the sum is 32.

The square root of 25439441 is about 5043.7526703834. The cubic root of 25439441 is about 294.1050768220.

The spelling of 25439441 in words is "twenty-five million, four hundred thirty-nine thousand, four hundred forty-one".