25511232 has 112 divisors (see below), whose sum is σ = 72420480. Its totient is φ = 7907328.

The previous prime is 25511231. The next prime is 25511249. The reversal of 25511232 is 23211552.

Its product of digits (600) is a multiple of the sum of its prime factors (200).

It is a junction number, because it is equal to n+sod(n) for n = 25511199 and 25511208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25511231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233994 + ... + 234102.

Almost surely, 2^25511232 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 25511232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36210240).

25511232 is an abundant number, since it is smaller than the sum of its proper divisors (46909248).

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

25511232 is a wasteful number, since it uses less digits than its factorization.

25511232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 190 counting only the distinct ones).

The product of its digits is 600, while the sum is 21.

The square root of 25511232 is about 5050.8644804627. The cubic root of 25511232 is about 294.3814752837.

Adding to 25511232 its reverse (23211552), we get a palindrome (48722784).

The spelling of 25511232 in words is "twenty-five million, five hundred eleven thousand, two hundred thirty-two".