4025538990 has 96 divisors (see below), whose sum is σ = 11438814816. Its totient is φ = 974100480.

The previous prime is 4025538983. The next prime is 4025538991. The reversal of 4025538990 is 998355204.

4025538990 is a `hidden beast` number, since 4 + 0 + 2 + 553 + 8 + 9 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4025538991) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 583642 + ... + 590498.

It is an arithmetic number, because the mean of its divisors is an integer number (119154321).

Almost surely, 2^4025538990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4025538990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5719407408).

4025538990 is an abundant number, since it is smaller than the sum of its proper divisors (7413275826).

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

4025538990 is a wasteful number, since it uses less digits than its factorization.

4025538990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7474 (or 7471 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 4025538990 is about 63447.1353963282. The cubic root of 4025538990 is about 1590.7722722849.

The spelling of 4025538990 in words is "four billion, twenty-five million, five hundred thirty-eight thousand, nine hundred ninety".