2425840 has 20 divisors (see below), whose sum is σ = 5640264. Its totient is φ = 970304.

The previous prime is 2425837. The next prime is 2425889. The reversal of 2425840 is 485242.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15082 + ... + 15241.

2^2425840 is an apocalyptic number.

2425840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2425840 is an abundant number, since it is smaller than the sum of its proper divisors (3214424).

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

2425840 is a wasteful number, since it uses less digits than its factorization.

2425840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30336 (or 30330 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 2425840 is about 1557.5108346333. The cubic root of 2425840 is about 134.3653798774.

The spelling of 2425840 in words is "two million, four hundred twenty-five thousand, eight hundred forty".