12003502525 has 24 divisors (see below), whose sum is σ = 17014785984. Its totient is φ = 8228985600.

The previous prime is 12003502523. The next prime is 12003502543. The reversal of 12003502525 is 52520530021.

It is a happy number.

It is not a de Polignac number, because 12003502525 - 2¹ = 12003502523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 12003502525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003502523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1443630 + ... + 1451920.

It is an arithmetic number, because the mean of its divisors is an integer number (708949416).

Almost surely, 2^12003502525 is an apocalyptic number.

It is an amenable number.

12003502525 is a deficient number, since it is larger than the sum of its proper divisors (5011283459).

12003502525 is an equidigital number, since it uses as much as digits as its factorization.

12003502525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16581 (or 16576 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The spelling of 12003502525 in words is "twelve billion, three million, five hundred two thousand, five hundred twenty-five".