6425240 has 48 divisors (see below), whose sum is σ = 15050880. Its totient is φ = 2468480.

The previous prime is 6425239. The next prime is 6425267. The reversal of 6425240 is 425246.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33545 + ... + 33735.

It is an arithmetic number, because the mean of its divisors is an integer number (313560).

Almost surely, 2^6425240 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 6425240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7525440).

6425240 is an abundant number, since it is smaller than the sum of its proper divisors (8625640).

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

6425240 is a wasteful number, since it uses less digits than its factorization.

6425240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 6425240 is about 2534.8057124758. The cubic root of 6425240 is about 185.9073034078.

The spelling of 6425240 in words is "six million, four hundred twenty-five thousand, two hundred forty".