25040087171 has 8 divisors (see below), whose sum is σ = 27317708784. Its totient is φ = 22762673920.

The previous prime is 25040087161. The next prime is 25040087209. The reversal of 25040087171 is 17178004052.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25040087171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25040087131) 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, 306635 + ... + 379611.

It is an arithmetic number, because the mean of its divisors is an integer number (3414713598).

Almost surely, 2^25040087171 is an apocalyptic number.

25040087171 is a deficient number, since it is larger than the sum of its proper divisors (2277621613).

25040087171 is a wasteful number, since it uses less digits than its factorization.

25040087171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104181.

The product of its (nonzero) digits is 15680, while the sum is 35.

The spelling of 25040087171 in words is "twenty-five billion, forty million, eighty-seven thousand, one hundred seventy-one".