7725894 has 64 divisors (see below), whose sum is σ = 18213120. Its totient is φ = 2160000.

The previous prime is 7725881. The next prime is 7725911. The reversal of 7725894 is 4985277.

It is a d-powerful number, because it can be written as 7³ + 7⁸ + 2⁵ + 5⁹ + 8 + 9⁴ + 4⁵ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76444 + ... + 76544.

It is an arithmetic number, because the mean of its divisors is an integer number (284580).

Almost surely, 2^7725894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7725894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9106560).

7725894 is an abundant number, since it is smaller than the sum of its proper divisors (10487226).

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

7725894 is a wasteful number, since it uses less digits than its factorization.

7725894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197.

The product of its digits is 141120, while the sum is 42.

The square root of 7725894 is about 2779.5492440322. The cubic root of 7725894 is about 197.6891868753.

It can be divided in two parts, 772 and 5894, that added together give a palindrome (6666).

The spelling of 7725894 in words is "seven million, seven hundred twenty-five thousand, eight hundred ninety-four".