9125640 has 48 divisors (see below), whose sum is σ = 29659500. Its totient is φ = 2433408.

The previous prime is 9125639. The next prime is 9125659. The reversal of 9125640 is 465219.

9125640 is a `hidden beast` number, since 9 + 12 + 5 + 640 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8964036 + 161604 = 2994^2 + 402^2 .

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 11 ways as a sum of consecutive naturals, for example, 12315 + ... + 13034.

Almost surely, 2^9125640 is an apocalyptic number.

9125640 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9125640 is an abundant number, since it is smaller than the sum of its proper divisors (20533860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9125640 is a wasteful number, since it uses less digits than its factorization.

9125640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25366 (or 25359 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 9125640 is about 3020.8674250950. The cubic root of 9125640 is about 208.9718451424.

The spelling of 9125640 in words is "nine million, one hundred twenty-five thousand, six hundred forty".