25330132240 has 80 divisors (see below), whose sum is σ = 69476981760. Its totient is φ = 8404462080.

The previous prime is 25330132237. The next prime is 25330132241. The reversal of 25330132240 is 4223103352.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (25330132241) 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, 712195 + ... + 746914.

It is an arithmetic number, because the mean of its divisors is an integer number (868462272).

Almost surely, 2^25330132240 is an apocalyptic number.

25330132240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25330132240 is an abundant number, since it is smaller than the sum of its proper divisors (44146849520).

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

25330132240 is a wasteful number, since it uses less digits than its factorization.

25330132240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459160 (or 1459154 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 25330132240 its reverse (4223103352), we get a palindrome (29553235592).

The spelling of 25330132240 in words is "twenty-five billion, three hundred thirty million, one hundred thirty-two thousand, two hundred forty".