20463534625 has 16 divisors (see below), whose sum is σ = 26419133520. Its totient is φ = 15806313600.

The previous prime is 20463534617. The next prime is 20463534643. The reversal of 20463534625 is 52643536402.

It can be written as a sum of positive squares in 8 ways, for example, as 5711731776 + 14751802849 = 75576^2 + 121457^2 .

It is not a de Polignac number, because 20463534625 - 2³ = 20463534617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2818932 + ... + 2826181.

It is an arithmetic number, because the mean of its divisors is an integer number (1651195845).

Almost surely, 2^20463534625 is an apocalyptic number.

20463534625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20463534625 is a deficient number, since it is larger than the sum of its proper divisors (5955598895).

20463534625 is an equidigital number, since it uses as much as digits as its factorization.

20463534625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5645157 (or 5645147 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 40.

The spelling of 20463534625 in words is "twenty billion, four hundred sixty-three million, five hundred thirty-four thousand, six hundred twenty-five".