12525504505440 has 96 divisors (see below), whose sum is σ = 39543213679200. Its totient is φ = 3332695425024.

The previous prime is 12525504505433. The next prime is 12525504505457. The reversal of 12525504505440 is 4450540552521.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 12525504505392 and 12525504505401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28843279 + ... + 29274318.

It is an arithmetic number, because the mean of its divisors is an integer number (411908475825).

Almost surely, 2^{12525504505440} is an apocalyptic number.

12525504505440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12525504505440 is an abundant number, since it is smaller than the sum of its proper divisors (27017709173760).

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

12525504505440 is a wasteful number, since it uses less digits than its factorization.

12525504505440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58118064 (or 58118056 counting only the distinct ones).

The product of its (nonzero) digits is 800000, while the sum is 42.

The spelling of 12525504505440 in words is "twelve trillion, five hundred twenty-five billion, five hundred four million, five hundred five thousand, four hundred forty".