25211281317 has 16 divisors (see below), whose sum is σ = 35426496000. Its totient is φ = 15903905904.

The previous prime is 25211281301. The next prime is 25211281351. The reversal of 25211281317 is 71318211252.

It is not a de Polignac number, because 25211281317 - 2⁴ = 25211281301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25211281357) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 215767 + ... + 311412.

It is an arithmetic number, because the mean of its divisors is an integer number (2214156000).

Almost surely, 2^25211281317 is an apocalyptic number.

It is an amenable number.

25211281317 is a deficient number, since it is larger than the sum of its proper divisors (10215214683).

25211281317 is a wasteful number, since it uses less digits than its factorization.

25211281317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528040.

The product of its digits is 6720, while the sum is 33.

Adding to 25211281317 its reverse (71318211252), we get a palindrome (96529492569).

The spelling of 25211281317 in words is "twenty-five billion, two hundred eleven million, two hundred eighty-one thousand, three hundred seventeen".