25538500471 has 8 divisors (see below), whose sum is σ = 28031105664. Its totient is φ = 23074382520.

The previous prime is 25538500459. The next prime is 25538500489. The reversal of 25538500471 is 17400583552.

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 25538500471 - 2¹⁷ = 25538369399 is a prime.

It is a super-3 number, since 3×25538500471³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25538500411) 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, 7119931 + ... + 7123516.

It is an arithmetic number, because the mean of its divisors is an integer number (3503888208).

Almost surely, 2^25538500471 is an apocalyptic number.

25538500471 is a deficient number, since it is larger than the sum of its proper divisors (2492605193).

25538500471 is a wasteful number, since it uses less digits than its factorization.

25538500471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14243621.

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 25538500471 in words is "twenty-five billion, five hundred thirty-eight million, five hundred thousand, four hundred seventy-one".