25653136 has 40 divisors (see below), whose sum is σ = 54070200. Its totient is φ = 11741184.

The previous prime is 25653109. The next prime is 25653137. The reversal of 25653136 is 63135652.

It can be written as a sum of positive squares in 4 ways, for example, as 18662400 + 6990736 = 4320^2 + 2644^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25653098 and 25653107.

It is not an unprimeable number, because it can be changed into a prime (25653137) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8790 + ... + 11338.

It is an arithmetic number, because the mean of its divisors is an integer number (1351755).

Almost surely, 2^25653136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25653136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27035100).

25653136 is an abundant number, since it is smaller than the sum of its proper divisors (28417064).

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

25653136 is a wasteful number, since it uses less digits than its factorization.

25653136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611 (or 2605 counting only the distinct ones).

The product of its digits is 16200, while the sum is 31.

The square root of 25653136 is about 5064.8924963912. The cubic root of 25653136 is about 294.9262901161.

Adding to 25653136 its reverse (63135652), we get a palindrome (88788788).

The spelling of 25653136 in words is "twenty-five million, six hundred fifty-three thousand, one hundred thirty-six".