20288325 has 24 divisors (see below), whose sum is σ = 33776608. Its totient is φ = 10745280.

The previous prime is 20288299. The next prime is 20288339. The reversal of 20288325 is 52388202.

It is not a de Polignac number, because 20288325 - 2¹⁰ = 20287301 is a prime.

It is a super-2 number, since 2×20288325² = 823232262611250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20288292 and 20288301.

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, 10914 + ... + 12636.

Almost surely, 2^20288325 is an apocalyptic number.

20288325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20288325 is a deficient number, since it is larger than the sum of its proper divisors (13488283).

20288325 is a wasteful number, since it uses less digits than its factorization.

20288325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893 (or 1888 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 20288325 is about 4504.2563204152. The cubic root of 20288325 is about 272.7399340082.

The spelling of 20288325 in words is "twenty million, two hundred eighty-eight thousand, three hundred twenty-five".