20225264 has 20 divisors (see below), whose sum is σ = 39684960. Its totient is φ = 9984000.

The previous prime is 20225251. The next prime is 20225281. The reversal of 20225264 is 46252202.

It is a super-2 number, since 2×20225264² = 818122607739392, which contains 22 as substring.

It is a congruent number.

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, 6737 + ... + 9264.

It is an arithmetic number, because the mean of its divisors is an integer number (1984248).

Almost surely, 2^20225264 is an apocalyptic number.

It is an amenable number.

20225264 is a deficient number, since it is larger than the sum of its proper divisors (19459696).

20225264 is a wasteful number, since it uses less digits than its factorization.

20225264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16088 (or 16082 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20225264 is about 4497.2507157151. The cubic root of 20225264 is about 272.4570602598.

Adding to 20225264 its reverse (46252202), we get a palindrome (66477466).

The spelling of 20225264 in words is "twenty million, two hundred twenty-five thousand, two hundred sixty-four".