25525136 has 80 divisors (see below), whose sum is σ = 62329344. Its totient is φ = 9856512.

The previous prime is 25525127. The next prime is 25525223. The reversal of 25525136 is 63152552.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25525099 and 25525108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68246 + ... + 68618.

Almost surely, 2^25525136 is an apocalyptic number.

25525136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25525136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31164672).

25525136 is an abundant number, since it is smaller than the sum of its proper divisors (36804208).

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

25525136 is a wasteful number, since it uses less digits than its factorization.

25525136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 442 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 25525136 is about 5052.2406910202. The cubic root of 25525136 is about 294.4349463281.

Adding to 25525136 its reverse (63152552), we get a palindrome (88677688).

The spelling of 25525136 in words is "twenty-five million, five hundred twenty-five thousand, one hundred thirty-six".