20103625 has 8 divisors (see below), whose sum is σ = 25089480. Its totient is φ = 16082800.

The previous prime is 20103619. The next prime is 20103637. The reversal of 20103625 is 52630102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6086089 + 14017536 = 2467^2 + 3744^2 .

It is not a de Polignac number, because 20103625 - 2⁹ = 20103113 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80290 + ... + 80539.

It is an arithmetic number, because the mean of its divisors is an integer number (3136185).

Almost surely, 2^20103625 is an apocalyptic number.

20103625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20103625 is a deficient number, since it is larger than the sum of its proper divisors (4985855).

20103625 is an equidigital number, since it uses as much as digits as its factorization.

20103625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160844 (or 160834 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20103625 is about 4483.7066139523. The cubic root of 20103625 is about 271.9097568635.

Adding to 20103625 its reverse (52630102), we get a palindrome (72733727).

The spelling of 20103625 in words is "twenty million, one hundred three thousand, six hundred twenty-five".