19470016225 has 81 divisors (see below), whose sum is σ = 27636934899. Its totient is φ = 13596290400.

The previous prime is 19470016213. The next prime is 19470016261. The reversal of 19470016225 is 52261007491.

The square root of 19470016225 is 139535.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7009205841 + 12460810384 = 83721^2 + 111628^2 .

It is not a de Polignac number, because 19470016225 - 2⁵ = 19470016193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 330000246 + ... + 330000304.

Almost surely, 2^19470016225 is an apocalyptic number.

19470016225 is the 139535-th square number.

19470016225 is the 69768-th centered octagonal number.

It is an amenable number.

19470016225 is a deficient number, since it is larger than the sum of its proper divisors (8166918674).

19470016225 is an equidigital number, since it uses as much as digits as its factorization.

19470016225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

It can be divided in two parts, 194700 and 16225, that added together give a triangular number (210925 = T₆₄₉).

The spelling of 19470016225 in words is "nineteen billion, four hundred seventy million, sixteen thousand, two hundred twenty-five".