25340235132 has 24 divisors (see below), whose sum is σ = 60242824656. Its totient is φ = 8287372288.

The previous prime is 25340235131. The next prime is 25340235163. The reversal of 25340235132 is 23153204352.

It is a self number, because there is not a number n which added to its sum of digits gives 25340235132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25340235131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19920933 + ... + 19922204.

It is an arithmetic number, because the mean of its divisors is an integer number (2510117694).

Almost surely, 2^25340235132 is an apocalyptic number.

It is an amenable number.

25340235132 is an abundant number, since it is smaller than the sum of its proper divisors (34902589524).

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

25340235132 is a wasteful number, since it uses less digits than its factorization.

25340235132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39843197 (or 39843195 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 25340235132 its reverse (23153204352), we get a palindrome (48493439484).

The spelling of 25340235132 in words is "twenty-five billion, three hundred forty million, two hundred thirty-five thousand, one hundred thirty-two".