191496194386225 has 9 divisors (see below), whose sum is σ = 237455366835883. Its totient is φ = 153196900156120.

The previous prime is 191496194386207. The next prime is 191496194386279. The reversal of 191496194386225 is 522683491694191.

The square root of 191496194386225 is 13838215.

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., 68938629979041 + 122557564407184 = 8302929^2 + 11070572^2 .

It is not a de Polignac number, because 191496194386225 - 2¹³ = 191496194378033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 67807254 + ... + 70574896.

Almost surely, 2^{191496194386225} is an apocalyptic number.

191496194386225 is the 13838215-th square number.

191496194386225 is the 6919108-th centered octagonal number.

It is an amenable number.

191496194386225 is a deficient number, since it is larger than the sum of its proper divisors (45959172449658).

191496194386225 is an frugal number, since it uses more digits than its factorization.

191496194386225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5535296 (or 2767648 counting only the distinct ones).

The product of its digits is 201553920, while the sum is 70.

The spelling of 191496194386225 in words is "one hundred ninety-one trillion, four hundred ninety-six billion, one hundred ninety-four million, three hundred eighty-six thousand, two hundred twenty-five".