12025155571 has 24 divisors (see below), whose sum is σ = 14255025120. Its totient is φ = 10076478720.

The previous prime is 12025155563. The next prime is 12025155589. The reversal of 12025155571 is 17555152021.

It is not a de Polignac number, because 12025155571 - 2³ = 12025155563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12025155521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1163595 + ... + 1173883.

It is an arithmetic number, because the mean of its divisors is an integer number (593959380).

Almost surely, 2^12025155571 is an apocalyptic number.

12025155571 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12025155571 is a deficient number, since it is larger than the sum of its proper divisors (2229869549).

12025155571 is a wasteful number, since it uses less digits than its factorization.

12025155571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11067 (or 11056 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 34.

The spelling of 12025155571 in words is "twelve billion, twenty-five million, one hundred fifty-five thousand, five hundred seventy-one".