25455065547 has 4 divisors (see below), whose sum is σ = 33940087400. Its totient is φ = 16970043696.

The previous prime is 25455065539. The next prime is 25455065593. The reversal of 25455065547 is 74556055452.

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

It is not a de Polignac number, because 25455065547 - 2³ = 25455065539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25455065496 and 25455065505.

It is not an unprimeable number, because it can be changed into a prime (25455065147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4242510922 + ... + 4242510927.

It is an arithmetic number, because the mean of its divisors is an integer number (8485021850).

Almost surely, 2^25455065547 is an apocalyptic number.

25455065547 is a deficient number, since it is larger than the sum of its proper divisors (8485021853).

25455065547 is an equidigital number, since it uses as much as digits as its factorization.

25455065547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8485021852.

The product of its (nonzero) digits is 4200000, while the sum is 48.

The spelling of 25455065547 in words is "twenty-five billion, four hundred fifty-five million, sixty-five thousand, five hundred forty-seven".