4025406 has 32 divisors (see below), whose sum is σ = 10038528. Its totient is φ = 1045440.

The previous prime is 4025389. The next prime is 4025407. The reversal of 4025406 is 6045204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4025407) 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, 3895 + ... + 4818.

It is an arithmetic number, because the mean of its divisors is an integer number (313704).

Almost surely, 2^4025406 is an apocalyptic number.

4025406 is an abundant number, since it is smaller than the sum of its proper divisors (6013122).

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

4025406 is a wasteful number, since it uses less digits than its factorization.

4025406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8736.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 4025406 is about 2006.3414465140. The cubic root of 4025406 is about 159.0754754206.

The spelling of 4025406 in words is "four million, twenty-five thousand, four hundred six".