21652725100 has 36 divisors (see below), whose sum is σ = 47008864504. Its totient is φ = 8656951680.

The previous prime is 21652725091. The next prime is 21652725137. The reversal of 21652725100 is 152725612.

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 11 ways as a sum of consecutive naturals, for example, 163039 + ... + 264361.

Almost surely, 2^21652725100 is an apocalyptic number.

21652725100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21652725100 is an abundant number, since it is smaller than the sum of its proper divisors (25356139404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21652725100 is a wasteful number, since it uses less digits than its factorization.

21652725100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103474 (or 103467 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 21652725100 in words is "twenty-one billion, six hundred fifty-two million, seven hundred twenty-five thousand, one hundred".