20525444 has 12 divisors (see below), whose sum is σ = 36018444. Its totient is φ = 10234464.

The previous prime is 20525437. The next prime is 20525459. The reversal of 20525444 is 44452502.

It can be written as a sum of positive squares in 2 ways, for example, as 5017600 + 15507844 = 2240^2 + 3938^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5387 + ... + 8370.

It is an arithmetic number, because the mean of its divisors is an integer number (3001537).

Almost surely, 2^20525444 is an apocalyptic number.

It is an amenable number.

20525444 is a deficient number, since it is larger than the sum of its proper divisors (15493000).

20525444 is a wasteful number, since it uses less digits than its factorization.

20525444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14134 (or 14132 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 20525444 is about 4530.5015174923. The cubic root of 20525444 is about 273.7983669395.

Adding to 20525444 its reverse (44452502), we get a palindrome (64977946).

The spelling of 20525444 in words is "twenty million, five hundred twenty-five thousand, four hundred forty-four".