20525043 has 16 divisors (see below), whose sum is σ = 34119936. Its totient is φ = 10662240.

The previous prime is 20525017. The next prime is 20525053. The reversal of 20525043 is 34052502.

It is not a de Polignac number, because 20525043 - 2⁹ = 20524531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20525053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44196 + ... + 44657.

It is an arithmetic number, because the mean of its divisors is an integer number (2132496).

Almost surely, 2^20525043 is an apocalyptic number.

20525043 is a deficient number, since it is larger than the sum of its proper divisors (13594893).

20525043 is a wasteful number, since it uses less digits than its factorization.

20525043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88874.

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

The square root of 20525043 is about 4530.4572616900. The cubic root of 20525043 is about 273.7965838866.

Adding to 20525043 its reverse (34052502), we get a palindrome (54577545).

The spelling of 20525043 in words is "twenty million, five hundred twenty-five thousand, forty-three".