91725265513 has 8 divisors (see below), whose sum is σ = 104831656128. Its totient is φ = 78619570224.

The previous prime is 91725265493. The next prime is 91725265537. The reversal of 91725265513 is 31556252719.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91725265513 - 2¹³ = 91725257321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91725265543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148770 + ... + 453412.

It is an arithmetic number, because the mean of its divisors is an integer number (13103957016).

Almost surely, 2^91725265513 is an apocalyptic number.

It is an amenable number.

91725265513 is a deficient number, since it is larger than the sum of its proper divisors (13106390615).

91725265513 is a wasteful number, since it uses less digits than its factorization.

91725265513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347663.

The product of its digits is 567000, while the sum is 46.

The spelling of 91725265513 in words is "ninety-one billion, seven hundred twenty-five million, two hundred sixty-five thousand, five hundred thirteen".