25541455505 has 16 divisors (see below), whose sum is σ = 31767353280. Its totient is φ = 19690792128.

The previous prime is 25541455417. The next prime is 25541455507. The reversal of 25541455505 is 50555414552.

It is not a de Polignac number, because 25541455505 - 2¹⁰ = 25541454481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25541455507) 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 15 ways as a sum of consecutive naturals, for example, 92567 + ... + 244236.

It is an arithmetic number, because the mean of its divisors is an integer number (1985459580).

Almost surely, 2^25541455505 is an apocalyptic number.

It is an amenable number.

25541455505 is a deficient number, since it is larger than the sum of its proper divisors (6225897775).

25541455505 is a wasteful number, since it uses less digits than its factorization.

25541455505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337360.

The product of its (nonzero) digits is 500000, while the sum is 41.

The spelling of 25541455505 in words is "twenty-five billion, five hundred forty-one million, four hundred fifty-five thousand, five hundred five".