25325146506 has 32 divisors (see below), whose sum is σ = 57160209600. Its totient is φ = 7409655680.

The previous prime is 25325146453. The next prime is 25325146507. The reversal of 25325146506 is 60564152352.

It is not an unprimeable number, because it can be changed into a prime (25325146507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6613851 + ... + 6617678.

It is an arithmetic number, because the mean of its divisors is an integer number (1786256550).

Almost surely, 2^25325146506 is an apocalyptic number.

25325146506 is an abundant number, since it is smaller than the sum of its proper divisors (31835063094).

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

25325146506 is a wasteful number, since it uses less digits than its factorization.

25325146506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13231574.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 25325146506 its reverse (60564152352), we get a palindrome (85889298858).

The spelling of 25325146506 in words is "twenty-five billion, three hundred twenty-five million, one hundred forty-six thousand, five hundred six".