25545043445 has 8 divisors (see below), whose sum is σ = 30683280600. Its totient is φ = 20416549120.

The previous prime is 25545043417. The next prime is 25545043451. The reversal of 25545043445 is 54434054552.

It can be written as a sum of positive squares in 4 ways, for example, as 728082289 + 24816961156 = 26983^2 + 157534^2 .

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

It is not a de Polignac number, because 25545043445 - 2⁸ = 25545043189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2429936 + ... + 2440425.

It is an arithmetic number, because the mean of its divisors is an integer number (3835410075).

Almost surely, 2^25545043445 is an apocalyptic number.

It is an amenable number.

25545043445 is a deficient number, since it is larger than the sum of its proper divisors (5138237155).

25545043445 is a wasteful number, since it uses less digits than its factorization.

25545043445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4871415.

The product of its (nonzero) digits is 960000, while the sum is 41.

Adding to 25545043445 its reverse (54434054552), we get a palindrome (79979097997).

The spelling of 25545043445 in words is "twenty-five billion, five hundred forty-five million, forty-three thousand, four hundred forty-five".