12025521000 has 96 divisors (see below), whose sum is σ = 40646291400. Its totient is φ = 3206803200.

The previous prime is 12025520999. The next prime is 12025521037. The reversal of 12025521000 is 12552021.

12025521000 is a `hidden beast` number, since 12 + 0 + 2 + 552 + 100 + 0 = 666.

12025521000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1878182244 + 10147338756 = 43338^2 + 100734^2 .

It is a super-2 number, since 2×12025521000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 659085 + ... + 677084.

Almost surely, 2^12025521000 is an apocalyptic number.

12025521000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12025521000 is an abundant number, since it is smaller than the sum of its proper divisors (28620770400).

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

12025521000 is a wasteful number, since it uses less digits than its factorization.

12025521000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336196 (or 1336179 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The spelling of 12025521000 in words is "twelve billion, twenty-five million, five hundred twenty-one thousand".