25545054553 has 8 divisors (see below), whose sum is σ = 26104003200. Its totient is φ = 24986749200.

The previous prime is 25545054547. The next prime is 25545054599. The reversal of 25545054553 is 35545054552.

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

It is a cyclic number.

It is not a de Polignac number, because 25545054553 - 2²⁵ = 25511500121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25545055553) 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, 80098 + ... + 239803.

It is an arithmetic number, because the mean of its divisors is an integer number (3263000400).

Almost surely, 2^25545054553 is an apocalyptic number.

It is an amenable number.

25545054553 is a deficient number, since it is larger than the sum of its proper divisors (558948647).

25545054553 is a wasteful number, since it uses less digits than its factorization.

25545054553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321647.

The product of its (nonzero) digits is 1500000, while the sum is 43.

Subtracting 25545054553 from its reverse (35545054552), we obtain a palindrome (9999999999).

The spelling of 25545054553 in words is "twenty-five billion, five hundred forty-five million, fifty-four thousand, five hundred fifty-three".