13625015515540 has 48 divisors (see below), whose sum is σ = 33614723600640. Its totient is φ = 4573431780480.

The previous prime is 13625015515511. The next prime is 13625015515543. The reversal of 13625015515540 is 4551551052631.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13625015515543) 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, 2381992860 + ... + 2381998579.

It is an arithmetic number, because the mean of its divisors is an integer number (700306741680).

Almost surely, 2^{13625015515540} is an apocalyptic number.

13625015515540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13625015515540 is an abundant number, since it is smaller than the sum of its proper divisors (19989708085100).

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

13625015515540 is a wasteful number, since it uses less digits than its factorization.

13625015515540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4763991472 (or 4763991470 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 43.

The spelling of 13625015515540 in words is "thirteen trillion, six hundred twenty-five billion, fifteen million, five hundred fifteen thousand, five hundred forty".