20884025 has 12 divisors (see below), whose sum is σ = 26499792. Its totient is φ = 16317840.

The previous prime is 20884013. The next prime is 20884033. The reversal of 20884025 is 52048802.

It is not a de Polignac number, because 20884025 - 2⁴ = 20884009 is a prime.

It is a super-2 number, since 2×20884025² = 872285000401250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8639 + ... + 10788.

It is an arithmetic number, because the mean of its divisors is an integer number (2208316).

Almost surely, 2^20884025 is an apocalyptic number.

20884025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20884025 is a deficient number, since it is larger than the sum of its proper divisors (5615767).

20884025 is a wasteful number, since it uses less digits than its factorization.

20884025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19480 (or 19475 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 20884025 is about 4569.9042659557. The cubic root of 20884025 is about 275.3835969041.

The spelling of 20884025 in words is "twenty million, eight hundred eighty-four thousand, twenty-five".