25052818205 has 8 divisors (see below), whose sum is σ = 30361039704. Its totient is φ = 19843816000.

The previous prime is 25052818187. The next prime is 25052818211. The reversal of 25052818205 is 50281825052.

It can be written as a sum of positive squares in 4 ways, for example, as 9701856004 + 15350962201 = 98498^2 + 123899^2 .

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

It is not a de Polignac number, because 25052818205 - 2¹² = 25052814109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 24804266 + ... + 24805275.

It is an arithmetic number, because the mean of its divisors is an integer number (3795129963).

Almost surely, 2^25052818205 is an apocalyptic number.

It is an amenable number.

25052818205 is a deficient number, since it is larger than the sum of its proper divisors (5308221499).

25052818205 is a wasteful number, since it uses less digits than its factorization.

25052818205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49609647.

The product of its (nonzero) digits is 64000, while the sum is 38.

The spelling of 25052818205 in words is "twenty-five billion, fifty-two million, eight hundred eighteen thousand, two hundred five".