19498675225 has 6 divisors (see below), whose sum is σ = 24178357310. Its totient is φ = 15598940160.

The previous prime is 19498675223. The next prime is 19498675241. The reversal of 19498675225 is 52257689491.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2959686409 + 16538988816 = 54403^2 + 128604^2 .

It is not a de Polignac number, because 19498675225 - 2¹ = 19498675223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19498675225.

It is not an unprimeable number, because it can be changed into a prime (19498675223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 389973480 + ... + 389973529.

Almost surely, 2^19498675225 is an apocalyptic number.

It is an amenable number.

19498675225 is a deficient number, since it is larger than the sum of its proper divisors (4679682085).

19498675225 is an equidigital number, since it uses as much as digits as its factorization.

19498675225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779947019 (or 779947014 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 58.

The spelling of 19498675225 in words is "nineteen billion, four hundred ninety-eight million, six hundred seventy-five thousand, two hundred twenty-five".