25127043317 has 4 divisors (see below), whose sum is σ = 25132485516. Its totient is φ = 25121601120.

The previous prime is 25127043313. The next prime is 25127043343. The reversal of 25127043317 is 71334072152.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13140953956 + 11986089361 = 114634^2 + 109481^2 .

It is a cyclic number.

It is not a de Polignac number, because 25127043317 - 2² = 25127043313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25127043313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2714168 + ... + 2723409.

It is an arithmetic number, because the mean of its divisors is an integer number (6283121379).

Almost surely, 2^25127043317 is an apocalyptic number.

It is an amenable number.

25127043317 is a deficient number, since it is larger than the sum of its proper divisors (5442199).

25127043317 is an equidigital number, since it uses as much as digits as its factorization.

25127043317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5442198.

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 25127043317 in words is "twenty-five billion, one hundred twenty-seven million, forty-three thousand, three hundred seventeen".