20330625 has 40 divisors (see below), whose sum is σ = 38737600. Its totient is φ = 9288000.

The previous prime is 20330591. The next prime is 20330647. The reversal of 20330625 is 52603302.

It is not a de Polignac number, because 20330625 - 2⁸ = 20330369 is a prime.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12351 + ... + 13899.

It is an arithmetic number, because the mean of its divisors is an integer number (968440).

Almost surely, 2^20330625 is an apocalyptic number.

20330625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20330625 is a deficient number, since it is larger than the sum of its proper divisors (18406975).

20330625 is an equidigital number, since it uses as much as digits as its factorization.

20330625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579 (or 1564 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 20330625 is about 4508.9494341809. The cubic root of 20330625 is about 272.9293514943.

Adding to 20330625 its reverse (52603302), we get a palindrome (72933927).

The spelling of 20330625 in words is "twenty million, three hundred thirty thousand, six hundred twenty-five".