25163536 has 40 divisors (see below), whose sum is σ = 52389504. Its totient is φ = 11665920.

The previous prime is 25163531. The next prime is 25163549. The reversal of 25163536 is 63536152.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25163498 and 25163507.

It is not an unprimeable number, because it can be changed into a prime (25163531) 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, 18661 + ... + 19963.

Almost surely, 2^25163536 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 25163536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26194752).

25163536 is an abundant number, since it is smaller than the sum of its proper divisors (27225968).

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

25163536 is a wasteful number, since it uses less digits than its factorization.

25163536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399 (or 1393 counting only the distinct ones).

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

The square root of 25163536 is about 5016.3269430929. The cubic root of 25163536 is about 293.0379648492.

Adding to 25163536 its reverse (63536152), we get a palindrome (88699688).

The spelling of 25163536 in words is "twenty-five million, one hundred sixty-three thousand, five hundred thirty-six".