25725161166 has 32 divisors (see below), whose sum is σ = 53168151168. Its totient is φ = 8292698400.

The previous prime is 25725161083. The next prime is 25725161213. The reversal of 25725161166 is 66116152752.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467556 + ... + 519671.

It is an arithmetic number, because the mean of its divisors is an integer number (1661504724).

Almost surely, 2^25725161166 is an apocalyptic number.

25725161166 is an abundant number, since it is smaller than the sum of its proper divisors (27442990002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25725161166 is a wasteful number, since it uses less digits than its factorization.

25725161166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987376.

The product of its digits is 151200, while the sum is 42.

The spelling of 25725161166 in words is "twenty-five billion, seven hundred twenty-five million, one hundred sixty-one thousand, one hundred sixty-six".