25533132 has 12 divisors (see below), whose sum is σ = 59577336. Its totient is φ = 8511040.

The previous prime is 25533077. The next prime is 25533139. The reversal of 25533132 is 23133552.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (25533139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063869 + ... + 1063892.

It is an arithmetic number, because the mean of its divisors is an integer number (4964778).

Almost surely, 2^25533132 is an apocalyptic number.

It is an amenable number.

25533132 is an abundant number, since it is smaller than the sum of its proper divisors (34044204).

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

25533132 is a wasteful number, since it uses less digits than its factorization.

25533132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127768 (or 2127766 counting only the distinct ones).

The product of its digits is 2700, while the sum is 24.

The square root of 25533132 is about 5053.0319611101. The cubic root of 25533132 is about 294.4656879996.

Adding to 25533132 its reverse (23133552), we get a palindrome (48666684).

The spelling of 25533132 in words is "twenty-five million, five hundred thirty-three thousand, one hundred thirty-two".