20228606525 has 24 divisors (see below), whose sum is σ = 25314317280. Its totient is φ = 16034610240.

The previous prime is 20228606509. The next prime is 20228606549. The reversal of 20228606525 is 52560682202.

It is not a de Polignac number, because 20228606525 - 2⁴ = 20228606509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1258439 + ... + 1274411.

It is an arithmetic number, because the mean of its divisors is an integer number (1054763220).

Almost surely, 2^20228606525 is an apocalyptic number.

20228606525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20228606525 is a deficient number, since it is larger than the sum of its proper divisors (5085710755).

20228606525 is a wasteful number, since it uses less digits than its factorization.

20228606525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16445 (or 16440 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 20228606525 in words is "twenty billion, two hundred twenty-eight million, six hundred six thousand, five hundred twenty-five".