25554255447 has 16 divisors (see below), whose sum is σ = 40989282560. Its totient is φ = 13833882432.

The previous prime is 25554255427. The next prime is 25554255487. The reversal of 25554255447 is 74455245552.

It is a happy number.

It is not a de Polignac number, because 25554255447 - 2¹⁴ = 25554239063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25554255396 and 25554255405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25554255427) 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 15 ways as a sum of consecutive naturals, for example, 32022478 + ... + 32023275.

It is an arithmetic number, because the mean of its divisors is an integer number (2561830160).

Almost surely, 2^25554255447 is an apocalyptic number.

25554255447 is a deficient number, since it is larger than the sum of its proper divisors (15435027113).

25554255447 is a wasteful number, since it uses less digits than its factorization.

25554255447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64045782.

The product of its digits is 5600000, while the sum is 48.

The spelling of 25554255447 in words is "twenty-five billion, five hundred fifty-four million, two hundred fifty-five thousand, four hundred forty-seven".