25171328897 has 8 divisors (see below), whose sum is σ = 29571911040. Its totient is φ = 21122793360.

The previous prime is 25171328893. The next prime is 25171328947. The reversal of 25171328897 is 79882317152.

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

It is a cyclic number.

It is not a de Polignac number, because 25171328897 - 2² = 25171328893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25171328893) 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, 88011497 + ... + 88011782.

It is an arithmetic number, because the mean of its divisors is an integer number (3696488880).

Almost surely, 2^25171328897 is an apocalyptic number.

It is an amenable number.

25171328897 is a deficient number, since it is larger than the sum of its proper divisors (4400582143).

25171328897 is a wasteful number, since it uses less digits than its factorization.

25171328897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176023303.

The product of its digits is 1693440, while the sum is 53.

The spelling of 25171328897 in words is "twenty-five billion, one hundred seventy-one million, three hundred twenty-eight thousand, eight hundred ninety-seven".