20043525 has 24 divisors (see below), whose sum is σ = 33346080. Its totient is φ = 10623040.

The previous prime is 20043469. The next prime is 20043559. The reversal of 20043525 is 52534002.

It is not a de Polignac number, because 20043525 - 2⁸ = 20043269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12679 + ... + 14171.

It is an arithmetic number, because the mean of its divisors is an integer number (1389420).

Almost surely, 2^20043525 is an apocalyptic number.

20043525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20043525 is a deficient number, since it is larger than the sum of its proper divisors (13302555).

20043525 is a wasteful number, since it uses less digits than its factorization.

20043525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685 (or 1680 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 20043525 is about 4476.9995532723. Note that the first 3 decimals coincide. The cubic root of 20043525 is about 271.6385273693.

Adding to 20043525 its reverse (52534002), we get a palindrome (72577527).

The spelling of 20043525 in words is "twenty million, forty-three thousand, five hundred twenty-five".