20019874250 has 32 divisors (see below), whose sum is σ = 37486367568. Its totient is φ = 8005992000.

The previous prime is 20019874249. The next prime is 20019874289. The reversal of 20019874250 is 5247891002.

It can be written as a sum of positive squares in 8 ways, for example, as 191573281 + 19828300969 = 13841^2 + 140813^2 .

It is a super-4 number, since 4×20019874250⁴ (a number of 42 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1448372 + ... + 1462128.

Almost surely, 2^20019874250 is an apocalyptic number.

20019874250 is a deficient number, since it is larger than the sum of its proper divisors (17466493318).

20019874250 is a wasteful number, since it uses less digits than its factorization.

20019874250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19595 (or 19585 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 20019874250 in words is "twenty billion, nineteen million, eight hundred seventy-four thousand, two hundred fifty".