91266825 has 24 divisors (see below), whose sum is σ = 162503488. Its totient is φ = 44930880.

The previous prime is 91266803. The next prime is 91266839. The reversal of 91266825 is 52866219.

It is not a de Polignac number, because 91266825 - 2⁵ = 91266793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45829 + ... + 47778.

Almost surely, 2^91266825 is an apocalyptic number.

It is an amenable number.

91266825 is a deficient number, since it is larger than the sum of its proper divisors (71236663).

91266825 is a wasteful number, since it uses less digits than its factorization.

91266825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93633 (or 93628 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 91266825 is about 9553.3672074301. The cubic root of 91266825 is about 450.2333357790.

It can be divided in two parts, 9126 and 6825, that added together give a palindrome (15951).

The spelling of 91266825 in words is "ninety-one million, two hundred sixty-six thousand, eight hundred twenty-five".