8425440 has 72 divisors (see below), whose sum is σ = 28756728. Its totient is φ = 2246400.

The previous prime is 8425433. The next prime is 8425447. The reversal of 8425440 is 445248.

8425440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8425433) and next prime (8425447).

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8425447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1486 + ... + 4365.

It is an arithmetic number, because the mean of its divisors is an integer number (399399).

Almost surely, 2^8425440 is an apocalyptic number.

8425440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8425440 is an abundant number, since it is smaller than the sum of its proper divisors (20331288).

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

8425440 is a wasteful number, since it uses less digits than its factorization.

8425440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5872 (or 5861 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 8425440 is about 2902.6608482563. The cubic root of 8425440 is about 203.4842798056.

The spelling of 8425440 in words is "eight million, four hundred twenty-five thousand, four hundred forty".