19736035225 has 9 divisors (see below), whose sum is σ = 24473554717. Its totient is φ = 15788266240.

The previous prime is 19736035223. The next prime is 19736035237. The reversal of 19736035225 is 52253063791.

The square root of 19736035225 is 140485.

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

It can be written as a sum of positive squares in 4 ways, for example, as 11822865289 + 7913169936 = 108733^2 + 88956^2 .

It is not a de Polignac number, because 19736035225 - 2¹ = 19736035223 is a prime.

It is a super-2 number, since 2×19736035225² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19736035223) 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, 688377 + ... + 716473.

Almost surely, 2^19736035225 is an apocalyptic number.

19736035225 is the 140485-th square number.

19736035225 is the 70243-rd centered octagonal number.

It is an amenable number.

19736035225 is a deficient number, since it is larger than the sum of its proper divisors (4737519492).

19736035225 is an frugal number, since it uses more digits than its factorization.

19736035225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56204 (or 28102 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 43.

The spelling of 19736035225 in words is "nineteen billion, seven hundred thirty-six million, thirty-five thousand, two hundred twenty-five".