25713521471 has 16 divisors (see below), whose sum is σ = 28286005248. Its totient is φ = 23180371200.

The previous prime is 25713521467. The next prime is 25713521473. The reversal of 25713521471 is 17412531752.

It is a cyclic number.

It is not a de Polignac number, because 25713521471 - 2² = 25713521467 is a prime.

It is a super-3 number, since 3×25713521471³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25713521473) 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, 4203311 + ... + 4209423.

It is an arithmetic number, because the mean of its divisors is an integer number (1767875328).

Almost surely, 2^25713521471 is an apocalyptic number.

25713521471 is a deficient number, since it is larger than the sum of its proper divisors (2572483777).

25713521471 is a wasteful number, since it uses less digits than its factorization.

25713521471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9262.

The product of its digits is 58800, while the sum is 38.

The spelling of 25713521471 in words is "twenty-five billion, seven hundred thirteen million, five hundred twenty-one thousand, four hundred seventy-one".