5725638 has 36 divisors (see below), whose sum is σ = 12857364. Its totient is φ = 1841400.

The previous prime is 5725627. The next prime is 5725663. The reversal of 5725638 is 8365275.

5725638 is a `hidden beast` number, since 572 + 56 + 38 = 666.

It is a d-powerful number, because it can be written as 5 + 7⁷ + 2¹³ + 5⁷ + 6² + 3¹⁴ + 8⁵ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17133 + ... + 17463.

It is an arithmetic number, because the mean of its divisors is an integer number (357149).

Almost surely, 2^5725638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5725638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6428682).

5725638 is an abundant number, since it is smaller than the sum of its proper divisors (7131726).

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

5725638 is a wasteful number, since it uses less digits than its factorization.

5725638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 367 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 5725638 is about 2392.8305414300. The cubic root of 5725638 is about 178.8990202687.

The spelling of 5725638 in words is "five million, seven hundred twenty-five thousand, six hundred thirty-eight".