25633132 has 48 divisors (see below), whose sum is σ = 54577152. Its totient is φ = 10296000.

The previous prime is 25633103. The next prime is 25633133. The reversal of 25633132 is 23133652.

It is a happy number.

It is a super-2 number, since 2×25633132² = 1314114912258848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25633097 and 25633106.

It is not an unprimeable number, because it can be changed into a prime (25633133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33757 + ... + 34507.

It is an arithmetic number, because the mean of its divisors is an integer number (1137024).

Almost surely, 2^25633132 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 25633132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27288576).

25633132 is an abundant number, since it is smaller than the sum of its proper divisors (28944020).

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

25633132 is a wasteful number, since it uses less digits than its factorization.

25633132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838 (or 836 counting only the distinct ones).

The product of its digits is 3240, while the sum is 25.

The square root of 25633132 is about 5062.9173408224. The cubic root of 25633132 is about 294.8496102165.

Adding to 25633132 its reverse (23133652), we get a palindrome (48766784).

The spelling of 25633132 in words is "twenty-five million, six hundred thirty-three thousand, one hundred thirty-two".