20552512505 has 8 divisors (see below), whose sum is σ = 28186302912. Its totient is φ = 14093151408.

The previous prime is 20552512493. The next prime is 20552512517. The reversal of 20552512505 is 50521525502.

It is an interprime number because it is at equal distance from previous prime (20552512493) and next prime (20552512517).

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

It is not a de Polignac number, because 20552512505 - 2¹⁰ = 20552511481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293607287 + ... + 293607356.

It is an arithmetic number, because the mean of its divisors is an integer number (3523287864).

Almost surely, 2^20552512505 is an apocalyptic number.

It is an amenable number.

20552512505 is a deficient number, since it is larger than the sum of its proper divisors (7633790407).

20552512505 is an equidigital number, since it uses as much as digits as its factorization.

20552512505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587214655.

The product of its (nonzero) digits is 25000, while the sum is 32.

The spelling of 20552512505 in words is "twenty billion, five hundred fifty-two million, five hundred twelve thousand, five hundred five".