91025 has 12 divisors (see below), whose sum is σ = 123504. Its totient is φ = 66000.

The previous prime is 91019. The next prime is 91033. The reversal of 91025 is 52019.

It is not a de Polignac number, because 91025 - 2⁴ = 91009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90994 and 91012.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91025.

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, 110 + ... + 440.

It is an arithmetic number, because the mean of its divisors is an integer number (10292).

2⁹¹⁰²⁵ is an apocalyptic number.

It is an amenable number.

91025 is a deficient number, since it is larger than the sum of its proper divisors (32479).

91025 is a wasteful number, since it uses less digits than its factorization.

91025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 91025 is about 301.7034968309. The cubic root of 91025 is about 44.9835330696.

The spelling of 91025 in words is "ninety-one thousand, twenty-five".