2625540 has 24 divisors (see below), whose sum is σ = 7351680. Its totient is φ = 700128.

The previous prime is 2625533. The next prime is 2625541. The reversal of 2625540 is 455262.

It is a self number, because there is not a number n which added to its sum of digits gives 2625540.

It is not an unprimeable number, because it can be changed into a prime (2625541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21820 + ... + 21939.

It is an arithmetic number, because the mean of its divisors is an integer number (306320).

2^2625540 is an apocalyptic number.

2625540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2625540 is an abundant number, since it is smaller than the sum of its proper divisors (4726140).

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

2625540 is a wasteful number, since it uses less digits than its factorization.

2625540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43771 (or 43769 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2625540 is about 1620.3518136504. The cubic root of 2625540 is about 137.9556673391.

The spelling of 2625540 in words is "two million, six hundred twenty-five thousand, five hundred forty".