91105025 has 24 divisors (see below), whose sum is σ = 125283648. Its totient is φ = 65160000.

The previous prime is 91105009. The next prime is 91105061. The reversal of 91105025 is 52050119.

It is not a de Polignac number, because 91105025 - 2⁴ = 91105009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14060 + ... + 19490.

It is an arithmetic number, because the mean of its divisors is an integer number (5220152).

Almost surely, 2^91105025 is an apocalyptic number.

It is an amenable number.

91105025 is a deficient number, since it is larger than the sum of its proper divisors (34178623).

91105025 is a wasteful number, since it uses less digits than its factorization.

91105025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5513 (or 5508 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 91105025 is about 9544.8952325314. The cubic root of 91105025 is about 449.9671169387.

The spelling of 91105025 in words is "ninety-one million, one hundred five thousand, twenty-five".