9091925 has 6 divisors (see below), whose sum is σ = 11274018. Its totient is φ = 7273520.

The previous prime is 9091921. The next prime is 9091939. The reversal of 9091925 is 5291909.

It can be written as a sum of positive squares in 3 ways, for example, as 877969 + 8213956 = 937^2 + 2866^2 .

It is not a de Polignac number, because 9091925 - 2² = 9091921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9091921) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 181814 + ... + 181863.

It is an arithmetic number, because the mean of its divisors is an integer number (1879003).

Almost surely, 2^9091925 is an apocalyptic number.

It is an amenable number.

9091925 is a deficient number, since it is larger than the sum of its proper divisors (2182093).

9091925 is a wasteful number, since it uses less digits than its factorization.

9091925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363687 (or 363682 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 9091925 is about 3015.2819105351. The cubic root of 9091925 is about 208.7141762662.

The spelling of 9091925 in words is "nine million, ninety-one thousand, nine hundred twenty-five".