91225132 has 12 divisors (see below), whose sum is σ = 159712000. Its totient is φ = 45593136.

The previous prime is 91225093. The next prime is 91225133. The reversal of 91225132 is 23152219.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 91225097 and 91225106.

It is not an unprimeable number, because it can be changed into a prime (91225133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12994 + ... + 18742.

Almost surely, 2^91225132 is an apocalyptic number.

It is an amenable number.

91225132 is a deficient number, since it is larger than the sum of its proper divisors (68486868).

91225132 is a wasteful number, since it uses less digits than its factorization.

91225132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9720 (or 9718 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 91225132 is about 9551.1848479652. The cubic root of 91225132 is about 450.1647660016.

The spelling of 91225132 in words is "ninety-one million, two hundred twenty-five thousand, one hundred thirty-two".