25153105020505 has 32 divisors (see below), whose sum is σ = 37647411851520. Its totient is φ = 15673293745920.

The previous prime is 25153105020443. The next prime is 25153105020517. The reversal of 25153105020505 is 50502050135152.

It is not a de Polignac number, because 25153105020505 - 2¹⁷ = 25153104889433 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12753894 + ... + 14593423.

It is an arithmetic number, because the mean of its divisors is an integer number (1176481620360).

Almost surely, 2^{25153105020505} is an apocalyptic number.

It is an amenable number.

25153105020505 is a deficient number, since it is larger than the sum of its proper divisors (12494306831015).

25153105020505 is a wasteful number, since it uses less digits than its factorization.

25153105020505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27349729.

The product of its (nonzero) digits is 37500, while the sum is 34.

Adding to 25153105020505 its reverse (50502050135152), we get a palindrome (75655155155657).

The spelling of 25153105020505 in words is "twenty-five trillion, one hundred fifty-three billion, one hundred five million, twenty thousand, five hundred five".