19275157225 has 9 divisors (see below), whose sum is σ = 23902055767. Its totient is φ = 15419570440.

The previous prime is 19275157219. The next prime is 19275157229. The reversal of 19275157225 is 52275157291.

The square root of 19275157225 is 138835.

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., 6939056601 + 12336100624 = 83301^2 + 111068^2 .

It is not a de Polignac number, because 19275157225 - 2⁵ = 19275157193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19275157229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 680292 + ... + 708058.

Almost surely, 2^19275157225 is an apocalyptic number.

19275157225 is the 138835-th square number.

19275157225 is the 69418-th centered octagonal number.

It is an amenable number.

19275157225 is a deficient number, since it is larger than the sum of its proper divisors (4626898542).

19275157225 is an frugal number, since it uses more digits than its factorization.

19275157225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55544 (or 27772 counting only the distinct ones).

The product of its digits is 441000, while the sum is 46.

The spelling of 19275157225 in words is "nineteen billion, two hundred seventy-five million, one hundred fifty-seven thousand, two hundred twenty-five".