19286265625 has 63 divisors (see below), whose sum is σ = 26763309769. Its totient is φ = 13887500000.

The previous prime is 19286265599. The next prime is 19286265641. The reversal of 19286265625 is 52656268291.

The square root of 19286265625 is 138875.

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

It can be written as a sum of positive squares in 10 ways, for example, as 18794490649 + 491774976 = 137093^2 + 22176^2 .

It is not a de Polignac number, because 19286265625 - 2⁹ = 19286265113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 190953075 + ... + 190953175.

Almost surely, 2^19286265625 is an apocalyptic number.

19286265625 is the 138875-th square number.

19286265625 is the 69438-th centered octagonal number.

It is an amenable number.

19286265625 is a deficient number, since it is larger than the sum of its proper divisors (7477044144).

19286265625 is an frugal number, since it uses more digits than its factorization.

19286265625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 117 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 52.

The spelling of 19286265625 in words is "nineteen billion, two hundred eighty-six million, two hundred sixty-five thousand, six hundred twenty-five".