25470947871 has 12 divisors (see below), whose sum is σ = 37688720160. Its totient is φ = 16566469920.

The previous prime is 25470947869. The next prime is 25470947917. The reversal of 25470947871 is 17874907452.

25470947871 is a `hidden beast` number, since 2 + 5 + 470 + 94 + 7 + 87 + 1 = 666.

It is not a de Polignac number, because 25470947871 - 2¹ = 25470947869 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25470947771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34513111 + ... + 34513848.

It is an arithmetic number, because the mean of its divisors is an integer number (3140726680).

Almost surely, 2^25470947871 is an apocalyptic number.

25470947871 is a deficient number, since it is larger than the sum of its proper divisors (12217772289).

25470947871 is a wasteful number, since it uses less digits than its factorization.

25470947871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69027006 (or 69027003 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 25470947871 in words is "twenty-five billion, four hundred seventy million, nine hundred forty-seven thousand, eight hundred seventy-one".