20043925 has 24 divisors (see below), whose sum is σ = 28301760. Its totient is φ = 13939200.

The previous prime is 20043923. The next prime is 20043937. The reversal of 20043925 is 52934002.

It is a happy number.

It is not a de Polignac number, because 20043925 - 2¹ = 20043923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 20043925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4741 + ... + 7909.

It is an arithmetic number, because the mean of its divisors is an integer number (1179240).

Almost surely, 2^20043925 is an apocalyptic number.

20043925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20043925 is a deficient number, since it is larger than the sum of its proper divisors (8257835).

20043925 is a wasteful number, since it uses less digits than its factorization.

20043925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213 (or 3208 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20043925 is about 4477.0442258258. The cubic root of 20043925 is about 271.6403343483.

Adding to 20043925 its reverse (52934002), we get a palindrome (72977927).

It can be divided in two parts, 2004 and 3925, that added together give a square (5929 = 77²).

The spelling of 20043925 in words is "twenty million, forty-three thousand, nine hundred twenty-five".