20203625 has 16 divisors (see below), whose sum is σ = 27155856. Its totient is φ = 14918400.

The previous prime is 20203621. The next prime is 20203639. The reversal of 20203625 is 52630202.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 14462809 + 5740816 = 3803^2 + 2396^2 .

It is not a de Polignac number, because 20203625 - 2² = 20203621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20203597 and 20203606.

It is not an unprimeable number, because it can be changed into a prime (20203621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4592 + ... + 7841.

It is an arithmetic number, because the mean of its divisors is an integer number (1697241).

Almost surely, 2^20203625 is an apocalyptic number.

20203625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20203625 is a deficient number, since it is larger than the sum of its proper divisors (6952231).

20203625 is a wasteful number, since it uses less digits than its factorization.

20203625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12461 (or 12451 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20203625 is about 4494.8442687150. The cubic root of 20203625 is about 272.3598583613.

Adding to 20203625 its reverse (52630202), we get a palindrome (72833827).

The spelling of 20203625 in words is "twenty million, two hundred three thousand, six hundred twenty-five".