25536045171 has 96 divisors (see below), whose sum is σ = 44086244160. Its totient is φ = 13099387392.

The previous prime is 25536045137. The next prime is 25536045173. The reversal of 25536045171 is 17154063552.

It is not a de Polignac number, because 25536045171 - 2⁶ = 25536045107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (25536045173) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11948415 + ... + 11950551.

It is an arithmetic number, because the mean of its divisors is an integer number (459231710).

Almost surely, 2^25536045171 is an apocalyptic number.

25536045171 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25536045171 is a deficient number, since it is larger than the sum of its proper divisors (18550198989).

25536045171 is a wasteful number, since it uses less digits than its factorization.

25536045171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230 (or 2197 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The spelling of 25536045171 in words is "twenty-five billion, five hundred thirty-six million, forty-five thousand, one hundred seventy-one".