25052505505 has 8 divisors (see below), whose sum is σ = 30187750824. Its totient is φ = 19958841600.

The previous prime is 25052505503. The next prime is 25052505547. The reversal of 25052505505 is 50550525052.

It can be written as a sum of positive squares in 4 ways, for example, as 12925870864 + 12126634641 = 113692^2 + 110121^2 .

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

It is not a de Polignac number, because 25052505505 - 2¹ = 25052505503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25052505503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10394026 + ... + 10396435.

It is an arithmetic number, because the mean of its divisors is an integer number (3773468853).

Almost surely, 2^25052505505 is an apocalyptic number.

It is an amenable number.

25052505505 is a deficient number, since it is larger than the sum of its proper divisors (5135245319).

25052505505 is a wasteful number, since it uses less digits than its factorization.

25052505505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20790707.

The product of its (nonzero) digits is 62500, while the sum is 34.

The spelling of 25052505505 in words is "twenty-five billion, fifty-two million, five hundred five thousand, five hundred five".