63525045621 has 8 divisors (see below), whose sum is σ = 84724746880. Its totient is φ = 42337687392.

The previous prime is 63525045611. The next prime is 63525045629. The reversal of 63525045621 is 12654052536.

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

It is not a de Polignac number, because 63525045621 - 2¹⁸ = 63524783477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63525045621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63525045629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3073741 + ... + 3094338.

It is an arithmetic number, because the mean of its divisors is an integer number (10590593360).

Almost surely, 2^63525045621 is an apocalyptic number.

It is an amenable number.

63525045621 is a deficient number, since it is larger than the sum of its proper divisors (21199701259).

63525045621 is a wasteful number, since it uses less digits than its factorization.

63525045621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6171515.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 63525045621 in words is "sixty-three billion, five hundred twenty-five million, forty-five thousand, six hundred twenty-one".