25453435451 has 4 divisors (see below), whose sum is σ = 25760103432. Its totient is φ = 25146767472.

The previous prime is 25453435439. The next prime is 25453435457. The reversal of 25453435451 is 15453435452.

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

It is a cyclic number.

It is not a de Polignac number, because 25453435451 - 2⁶ = 25453435387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25453435399 and 25453435408.

It is not an unprimeable number, because it can be changed into a prime (25453435457) 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 3 ways as a sum of consecutive naturals, for example, 153333866 + ... + 153334031.

It is an arithmetic number, because the mean of its divisors is an integer number (6440025858).

Almost surely, 2^25453435451 is an apocalyptic number.

25453435451 is a deficient number, since it is larger than the sum of its proper divisors (306667981).

25453435451 is an equidigital number, since it uses as much as digits as its factorization.

25453435451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306667980.

The product of its digits is 720000, while the sum is 41.

Subtracting from 25453435451 its reverse (15453435452), we obtain a palindrome (9999999999).

The spelling of 25453435451 in words is "twenty-five billion, four hundred fifty-three million, four hundred thirty-five thousand, four hundred fifty-one".