91182681725 has 12 divisors (see below), whose sum is σ = 113249796564. Its totient is φ = 72827905920.

The previous prime is 91182681697. The next prime is 91182681767. The reversal of 91182681725 is 52718628119.

It can be written as a sum of positive squares in 6 ways, for example, as 16048582489 + 75134099236 = 126683^2 + 274106^2 .

It is not a de Polignac number, because 91182681725 - 2⁶ = 91182681661 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 Duffinian number.

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, 2940254 + ... + 2971103.

It is an arithmetic number, because the mean of its divisors is an integer number (9437483047).

Almost surely, 2^91182681725 is an apocalyptic number.

It is an amenable number.

91182681725 is a deficient number, since it is larger than the sum of its proper divisors (22067114839).

91182681725 is a wasteful number, since it uses less digits than its factorization.

91182681725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5911984 (or 5911979 counting only the distinct ones).

The product of its digits is 483840, while the sum is 50.

The spelling of 91182681725 in words is "ninety-one billion, one hundred eighty-two million, six hundred eighty-one thousand, seven hundred twenty-five".