925640 has 32 divisors (see below), whose sum is σ = 2117880. Its totient is φ = 364032.

The previous prime is 925637. The next prime is 925649. The reversal of 925640 is 46529.

It can be written as a sum of positive squares in 4 ways, for example, as 538756 + 386884 = 734^2 + 622^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 925640.

It is not an unprimeable number, because it can be changed into a prime (925649) 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, 2762 + ... + 3078.

2⁹²⁵⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 925640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058940).

925640 is an abundant number, since it is smaller than the sum of its proper divisors (1192240).

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

925640 is a wasteful number, since it uses less digits than its factorization.

925640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 925640 is about 962.1018657086. The cubic root of 925640 is about 97.4572242778.

The spelling of 925640 in words is "nine hundred twenty-five thousand, six hundred forty".