25429970871 has 32 divisors (see below), whose sum is σ = 39040972800. Its totient is φ = 16342456320.

The previous prime is 25429970869. The next prime is 25429970887. The reversal of 25429970871 is 17807992452.

25429970871 is a `hidden beast` number, since 2 + 542 + 9 + 97 + 0 + 8 + 7 + 1 = 666.

It is not a de Polignac number, because 25429970871 - 2¹ = 25429970869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25429970771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156000 + ... + 274218.

It is an arithmetic number, because the mean of its divisors is an integer number (1220030400).

Almost surely, 2^25429970871 is an apocalyptic number.

25429970871 is a deficient number, since it is larger than the sum of its proper divisors (13611001929).

25429970871 is a wasteful number, since it uses less digits than its factorization.

25429970871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118516 (or 118510 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 25429970871 in words is "twenty-five billion, four hundred twenty-nine million, nine hundred seventy thousand, eight hundred seventy-one".