25454422445453 has 4 divisors (see below), whose sum is σ = 25457910793500. Its totient is φ = 25450934097408.

The previous prime is 25454422445447. The next prime is 25454422445483. The reversal of 25454422445453 is 35454422445452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2977132840969 + 22477289604484 = 1725437^2 + 4741022^2 .

It is a cyclic number.

It is not a de Polignac number, because 25454422445453 - 2²⁶ = 25454355336589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25454422445395 and 25454422445404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25454422445423) 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, 1744163078 + ... + 1744177671.

It is an arithmetic number, because the mean of its divisors is an integer number (6364477698375).

Almost surely, 2^{25454422445453} is an apocalyptic number.

It is an amenable number.

25454422445453 is a deficient number, since it is larger than the sum of its proper divisors (3488348047).

25454422445453 is an equidigital number, since it uses as much as digits as its factorization.

25454422445453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488348046.

The product of its digits is 61440000, while the sum is 53.

Subtracting 25454422445453 from its reverse (35454422445452), we obtain a palindrome (9999999999999).

The spelling of 25454422445453 in words is "twenty-five trillion, four hundred fifty-four billion, four hundred twenty-two million, four hundred forty-five thousand, four hundred fifty-three".