25681002 has 16 divisors (see below), whose sum is σ = 51498720. Its totient is φ = 8537552.

The previous prime is 25681001. The next prime is 25681003. The reversal of 25681002 is 20018652.

It is an interprime number because it is at equal distance from previous prime (25681001) and next prime (25681003).

It is not an unprimeable number, because it can be changed into a prime (25681001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3168 + ... + 7835.

It is an arithmetic number, because the mean of its divisors is an integer number (3218670).

Almost surely, 2^25681002 is an apocalyptic number.

25681002 is an abundant number, since it is smaller than the sum of its proper divisors (25817718).

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

25681002 is a wasteful number, since it uses less digits than its factorization.

25681002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11397.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 25681002 is about 5067.6426472276. The cubic root of 25681002 is about 295.0330404437.

Adding to 25681002 its reverse (20018652), we get a palindrome (45699654).

It can be divided in two parts, 2568 and 1002, that added together give a triangular number (3570 = T₈₄).

The spelling of 25681002 in words is "twenty-five million, six hundred eighty-one thousand, two".