20415103250 has 16 divisors (see below), whose sum is σ = 38217073752. Its totient is φ = 8166041200.

The previous prime is 20415103243. The next prime is 20415103271. The reversal of 20415103250 is 5230151402.

It can be written as a sum of positive squares in 4 ways, for example, as 3933422089 + 16481681161 = 62717^2 + 128381^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40829957 + ... + 40830456.

Almost surely, 2^20415103250 is an apocalyptic number.

20415103250 is a deficient number, since it is larger than the sum of its proper divisors (17801970502).

20415103250 is an equidigital number, since it uses as much as digits as its factorization.

20415103250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81660430 (or 81660420 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 20415103250 its reverse (5230151402), we get a palindrome (25645254652).

The spelling of 20415103250 in words is "twenty billion, four hundred fifteen million, one hundred three thousand, two hundred fifty".