4025550 has 48 divisors (see below), whose sum is σ = 10213632. Its totient is φ = 1048800.

The previous prime is 4025543. The next prime is 4025551. The reversal of 4025550 is 555204.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4025551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6765 + ... + 7335.

It is an arithmetic number, because the mean of its divisors is an integer number (212784).

Almost surely, 2^4025550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4025550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5106816).

4025550 is an abundant number, since it is smaller than the sum of its proper divisors (6188082).

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

4025550 is a wasteful number, since it uses less digits than its factorization.

4025550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 4025550 is about 2006.3773324078. The cubic root of 4025550 is about 159.0773722557.

The spelling of 4025550 in words is "four million, twenty-five thousand, five hundred fifty".