12533525040 has 80 divisors (see below), whose sum is σ = 39904062048. Its totient is φ = 3251939328.

The previous prime is 12533524981. The next prime is 12533525041. The reversal of 12533525040 is 4052533521.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 12533524989 and 12533525007.

It is not an unprimeable number, because it can be changed into a prime (12533525041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696837 + ... + 714596.

Almost surely, 2^12533525040 is an apocalyptic number.

12533525040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12533525040 is an abundant number, since it is smaller than the sum of its proper divisors (27370537008).

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

12533525040 is a wasteful number, since it uses less digits than its factorization.

12533525040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411486 (or 1411480 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The spelling of 12533525040 in words is "twelve billion, five hundred thirty-three million, five hundred twenty-five thousand, forty".