91073225 has 12 divisors (see below), whose sum is σ = 113105856. Its totient is φ = 72745680.

The previous prime is 91073207. The next prime is 91073249. The reversal of 91073225 is 52237019.

It is not a de Polignac number, because 91073225 - 2¹⁶ = 91007689 is a prime.

It is a Duffinian number.

It is a Curzon 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, 16124 + ... + 21026.

It is an arithmetic number, because the mean of its divisors is an integer number (9425488).

Almost surely, 2^91073225 is an apocalyptic number.

It is an amenable number.

91073225 is a deficient number, since it is larger than the sum of its proper divisors (22032631).

91073225 is a wasteful number, since it uses less digits than its factorization.

91073225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5656 (or 5651 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 91073225 is about 9543.2292752506. The cubic root of 91073225 is about 449.9147575163.

The spelling of 91073225 in words is "ninety-one million, seventy-three thousand, two hundred twenty-five".