43520427353425 has 72 divisors (see below), whose sum is σ = 62139007438272. Its totient is φ = 29982387600000.

The previous prime is 43520427353393. The next prime is 43520427353443. The reversal of 43520427353425 is 52435372402534.

It is not a de Polignac number, because 43520427353425 - 2⁵ = 43520427353393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1568233300 + ... + 1568261050.

It is an arithmetic number, because the mean of its divisors is an integer number (863041769976).

Almost surely, 2^{43520427353425} is an apocalyptic number.

It is an amenable number.

43520427353425 is a deficient number, since it is larger than the sum of its proper divisors (18618580084847).

43520427353425 is a wasteful number, since it uses less digits than its factorization.

43520427353425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43607 (or 43583 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 49.

Adding to 43520427353425 its reverse (52435372402534), we get a palindrome (95955799755959).

The spelling of 43520427353425 in words is "forty-three trillion, five hundred twenty billion, four hundred twenty-seven million, three hundred fifty-three thousand, four hundred twenty-five".