25605145232 has 40 divisors (see below), whose sum is σ = 52038097920. Its totient is φ = 12181790720.

The previous prime is 25605145231. The next prime is 25605145253. The reversal of 25605145232 is 23254150652.

It is a junction number, because it is equal to n+sod(n) for n = 25605145192 and 25605145201.

It is not an unprimeable number, because it can be changed into a prime (25605145231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111857 + ... + 252432.

It is an arithmetic number, because the mean of its divisors is an integer number (1300952448).

Almost surely, 2^25605145232 is an apocalyptic number.

It is an amenable number.

25605145232 is an abundant number, since it is smaller than the sum of its proper divisors (26432952688).

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

25605145232 is a wasteful number, since it uses less digits than its factorization.

25605145232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364511 (or 364505 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 25605145232 its reverse (23254150652), we get a palindrome (48859295884).

The spelling of 25605145232 in words is "twenty-five billion, six hundred five million, one hundred forty-five thousand, two hundred thirty-two".