25440244204453 has 8 divisors (see below), whose sum is σ = 28839143228000. Its totient is φ = 22247339061168.

The previous prime is 25440244204439. The next prime is 25440244204457. The reversal of 25440244204453 is 35440244204452.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25440244204453 - 2¹³ = 25440244196261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25440244204457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51498469803 + ... + 51498470296.

It is an arithmetic number, because the mean of its divisors is an integer number (3604892903500).

Almost surely, 2^{25440244204453} is an apocalyptic number.

It is an amenable number.

25440244204453 is a deficient number, since it is larger than the sum of its proper divisors (3398899023547).

25440244204453 is a wasteful number, since it uses less digits than its factorization.

25440244204453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102996940131.

The product of its (nonzero) digits is 2457600, while the sum is 43.

Subtracting 25440244204453 from its reverse (35440244204452), we obtain a palindrome (9999999999999).

The spelling of 25440244204453 in words is "twenty-five trillion, four hundred forty billion, two hundred forty-four million, two hundred four thousand, four hundred fifty-three".