20827188125 has 20 divisors (see below), whose sum is σ = 26090870124. Its totient is φ = 16620000000.

The previous prime is 20827188103. The next prime is 20827188133. The reversal of 20827188125 is 52188172802.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 8473754809 + 12353433316 = 92053^2 + 111146^2 .

It is not a de Polignac number, because 20827188125 - 2¹⁴ = 20827171741 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 19 ways as a sum of consecutive naturals, for example, 209075 + ... + 292175.

Almost surely, 2^20827188125 is an apocalyptic number.

20827188125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20827188125 is a deficient number, since it is larger than the sum of its proper divisors (5263681999).

20827188125 is an frugal number, since it uses more digits than its factorization.

20827188125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83522 (or 83507 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 44.

The spelling of 20827188125 in words is "twenty billion, eight hundred twenty-seven million, one hundred eighty-eight thousand, one hundred twenty-five".