424625721563 has 4 divisors (see below), whose sum is σ = 428748301488. Its totient is φ = 420503141640.

The previous prime is 424625721503. The next prime is 424625721593. The reversal of 424625721563 is 365127526424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 424625721563 - 2¹⁶ = 424625656027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424625721503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2061289808 + ... + 2061290013.

It is an arithmetic number, because the mean of its divisors is an integer number (107187075372).

Almost surely, 2^424625721563 is an apocalyptic number.

424625721563 is a deficient number, since it is larger than the sum of its proper divisors (4122579925).

424625721563 is a wasteful number, since it uses less digits than its factorization.

424625721563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4122579924.

The product of its digits is 2419200, while the sum is 47.

The spelling of 424625721563 in words is "four hundred twenty-four billion, six hundred twenty-five million, seven hundred twenty-one thousand, five hundred sixty-three".