20525264 has 20 divisors (see below), whose sum is σ = 40314756. Its totient is φ = 10121472.

The previous prime is 20525261. The next prime is 20525287. The reversal of 20525264 is 46252502.

It can be written as a sum of positive squares in 2 ways, for example, as 13017664 + 7507600 = 3608^2 + 2740^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7619 + ... + 9954.

Almost surely, 2^20525264 is an apocalyptic number.

It is an amenable number.

20525264 is a deficient number, since it is larger than the sum of its proper divisors (19789492).

20525264 is a wasteful number, since it uses less digits than its factorization.

20525264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17654 (or 17648 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 20525264 is about 4530.4816520984. The cubic root of 20525264 is about 273.7975665695.

Adding to 20525264 its reverse (46252502), we get a palindrome (66777766).

The spelling of 20525264 in words is "twenty million, five hundred twenty-five thousand, two hundred sixty-four".