91488625 has 8 divisors (see below), whose sum is σ = 114177960. Its totient is φ = 73190800.

The previous prime is 91488623. The next prime is 91488647. The reversal of 91488625 is 52688419.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 400689 + 91087936 = 633^2 + 9544^2 .

It is not a de Polignac number, because 91488625 - 2¹ = 91488623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91488623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365830 + ... + 366079.

It is an arithmetic number, because the mean of its divisors is an integer number (14272245).

Almost surely, 2^91488625 is an apocalyptic number.

It is an amenable number.

91488625 is a deficient number, since it is larger than the sum of its proper divisors (22689335).

91488625 is an equidigital number, since it uses as much as digits as its factorization.

91488625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731924 (or 731914 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 91488625 is about 9564.9686355994. The cubic root of 91488625 is about 450.5977652674.

The spelling of 91488625 in words is "ninety-one million, four hundred eighty-eight thousand, six hundred twenty-five".