191608249325 has 12 divisors (see below), whose sum is σ = 237628059060. Its totient is φ = 153264773760.

The previous prime is 191608249303. The next prime is 191608249331. The reversal of 191608249325 is 523942806191.

It can be written as a sum of positive squares in 6 ways, for example, as 7187817961 + 184420431364 = 84781^2 + 429442^2 .

It is not a de Polignac number, because 191608249325 - 2²⁰ = 191607200749 is a prime.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 365384 + ... + 718833.

It is an arithmetic number, because the mean of its divisors is an integer number (19802338255).

Almost surely, 2^191608249325 is an apocalyptic number.

It is an amenable number.

191608249325 is a deficient number, since it is larger than the sum of its proper divisors (46019809735).

191608249325 is a wasteful number, since it uses less digits than its factorization.

191608249325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091296 (or 1091291 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 191608249325 in words is "one hundred ninety-one billion, six hundred eight million, two hundred forty-nine thousand, three hundred twenty-five".