20884125 has 16 divisors (see below), whose sum is σ = 34751808. Its totient is φ = 11138000.

The previous prime is 20884103. The next prime is 20884133. The reversal of 20884125 is 52148802.

It is not a de Polignac number, because 20884125 - 2¹⁸ = 20621981 is a prime.

It is a super-2 number, since 2×20884125² = 872293354031250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20884092 and 20884101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27471 + ... + 28220.

It is an arithmetic number, because the mean of its divisors is an integer number (2171988).

Almost surely, 2^20884125 is an apocalyptic number.

20884125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20884125 is a deficient number, since it is larger than the sum of its proper divisors (13867683).

20884125 is an equidigital number, since it uses as much as digits as its factorization.

20884125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55709 (or 55699 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 20884125 is about 4569.9152070908. The cubic root of 20884125 is about 275.3840364477.

The spelling of 20884125 in words is "twenty million, eight hundred eighty-four thousand, one hundred twenty-five".