20430514250 has 16 divisors (see below), whose sum is σ = 38245923144. Its totient is φ = 8172205600.

The previous prime is 20430514249. The next prime is 20430514259. The reversal of 20430514250 is 5241503402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4780754449 + 15649759801 = 69143^2 + 125099^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20430514259) by changing a digit.

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, 40860779 + ... + 40861278.

Almost surely, 2^20430514250 is an apocalyptic number.

20430514250 is a deficient number, since it is larger than the sum of its proper divisors (17815408894).

20430514250 is an equidigital number, since it uses as much as digits as its factorization.

20430514250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81722074 (or 81722064 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 20430514250 in words is "twenty billion, four hundred thirty million, five hundred fourteen thousand, two hundred fifty".