7425540 has 48 divisors (see below), whose sum is σ = 23103360. Its totient is φ = 1980000.

The previous prime is 7425533. The next prime is 7425547. The reversal of 7425540 is 455247.

It is an interprime number because it is at equal distance from previous prime (7425533) and next prime (7425547).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (7425547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6336 + ... + 7415.

It is an arithmetic number, because the mean of its divisors is an integer number (481320).

Almost surely, 2^7425540 is an apocalyptic number.

It is an amenable number.

7425540 is an abundant number, since it is smaller than the sum of its proper divisors (15677820).

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

7425540 is a wasteful number, since it uses less digits than its factorization.

7425540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13769 (or 13761 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 7425540 is about 2724.9844036251. The cubic root of 7425540 is about 195.0934463365.

The spelling of 7425540 in words is "seven million, four hundred twenty-five thousand, five hundred forty".