25534612571 has 16 divisors (see below), whose sum is σ = 27630708000. Its totient is φ = 23457627648.

The previous prime is 25534612553. The next prime is 25534612591. The reversal of 25534612571 is 17521643552.

It is a de Polignac number, because none of the positive numbers 2^k-25534612571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25534612501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2476595 + ... + 2486883.

It is an arithmetic number, because the mean of its divisors is an integer number (1726919250).

Almost surely, 2^25534612571 is an apocalyptic number.

25534612571 is a deficient number, since it is larger than the sum of its proper divisors (2096095429).

25534612571 is a wasteful number, since it uses less digits than its factorization.

25534612571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11198.

The product of its digits is 252000, while the sum is 41.

The spelling of 25534612571 in words is "twenty-five billion, five hundred thirty-four million, six hundred twelve thousand, five hundred seventy-one".