20553004525 has 6 divisors (see below), whose sum is σ = 25485725642. Its totient is φ = 16442403600.

The previous prime is 20553004481. The next prime is 20553004541. The reversal of 20553004525 is 52540035502.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 54756 + 20552949769 = 234^2 + 143363^2 .

It is not a de Polignac number, because 20553004525 - 2³¹ = 18405520877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411060066 + ... + 411060115.

Almost surely, 2^20553004525 is an apocalyptic number.

20553004525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20553004525 is a deficient number, since it is larger than the sum of its proper divisors (4932721117).

20553004525 is an equidigital number, since it uses as much as digits as its factorization.

20553004525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822120191 (or 822120186 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 31.

The spelling of 20553004525 in words is "twenty billion, five hundred fifty-three million, four thousand, five hundred twenty-five".