1447213518525 has 48 divisors (see below), whose sum is σ = 2411369376768. Its totient is φ = 765838848000.

The previous prime is 1447213518521. The next prime is 1447213518547. The reversal of 1447213518525 is 5258153127441.

It is not a de Polignac number, because 1447213518525 - 2² = 1447213518521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1447213518521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21657165 + ... + 21723885.

It is an arithmetic number, because the mean of its divisors is an integer number (50236862016).

Almost surely, 2^{1447213518525} is an apocalyptic number.

1447213518525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1447213518525 is a deficient number, since it is larger than the sum of its proper divisors (964155858243).

1447213518525 is a wasteful number, since it uses less digits than its factorization.

1447213518525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68982 (or 68977 counting only the distinct ones).

The product of its digits is 1344000, while the sum is 48.

The spelling of 1447213518525 in words is "one trillion, four hundred forty-seven billion, two hundred thirteen million, five hundred eighteen thousand, five hundred twenty-five".