63525376081281 has 8 divisors (see below), whose sum is σ = 84730740832224. Its totient is φ = 42335131025600.

The previous prime is 63525376081247. The next prime is 63525376081283. The reversal of 63525376081281 is 18218067352536.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63525376081281 - 2¹⁷ = 63525375950209 is a prime.

It is a super-2 number, since 2×63525376081281² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63525376081283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3779914011 + ... + 3779930816.

It is an arithmetic number, because the mean of its divisors is an integer number (10591342604028).

Almost surely, 2^{63525376081281} is an apocalyptic number.

It is an amenable number.

63525376081281 is a deficient number, since it is larger than the sum of its proper divisors (21205364750943).

63525376081281 is a wasteful number, since it uses less digits than its factorization.

63525376081281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7559847631.

The product of its (nonzero) digits is 14515200, while the sum is 57.

The spelling of 63525376081281 in words is "sixty-three trillion, five hundred twenty-five billion, three hundred seventy-six million, eighty-one thousand, two hundred eighty-one".