20873025 has 72 divisors (see below), whose sum is σ = 41113440. Its totient is φ = 10379520.

The previous prime is 20873003. The next prime is 20873051. The reversal of 20873025 is 52037802.

It is not a de Polignac number, because 20873025 - 2¹² = 20868929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20873025.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 195022 + ... + 195128.

It is an arithmetic number, because the mean of its divisors is an integer number (571020).

Almost surely, 2^20873025 is an apocalyptic number.

20873025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20873025 is a deficient number, since it is larger than the sum of its proper divisors (20240415).

20873025 is a wasteful number, since it uses less digits than its factorization.

20873025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 20873025 is about 4568.7005811281. The cubic root of 20873025 is about 275.3352385446.

The spelling of 20873025 in words is "twenty million, eight hundred seventy-three thousand, twenty-five".