91849025 has 6 divisors (see below), whose sum is σ = 113892822. Its totient is φ = 73479200.

The previous prime is 91849007. The next prime is 91849039. The reversal of 91849025 is 52094819.

It can be written as a sum of positive squares in 3 ways, for example, as 2961841 + 88887184 = 1721^2 + 9428^2 .

It is not a de Polignac number, because 91849025 - 2⁶ = 91848961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91849025.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1836956 + ... + 1837005.

It is an arithmetic number, because the mean of its divisors is an integer number (18982137).

Almost surely, 2^91849025 is an apocalyptic number.

It is an amenable number.

91849025 is a deficient number, since it is larger than the sum of its proper divisors (22043797).

91849025 is a wasteful number, since it uses less digits than its factorization.

91849025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673971 (or 3673966 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 91849025 is about 9583.7896992787. The cubic root of 91849025 is about 451.1886680865.

The spelling of 91849025 in words is "ninety-one million, eight hundred forty-nine thousand, twenty-five".