25142445100 has 72 divisors (see below), whose sum is σ = 55498791600. Its totient is φ = 9885216000.

The previous prime is 25142445079. The next prime is 25142445157. The reversal of 25142445100 is 154424152.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1394946 + ... + 1412854.

It is an arithmetic number, because the mean of its divisors is an integer number (770816550).

Almost surely, 2^25142445100 is an apocalyptic number.

25142445100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25142445100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27749395800).

25142445100 is an abundant number, since it is smaller than the sum of its proper divisors (30356346500).

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

25142445100 is a wasteful number, since it uses less digits than its factorization.

25142445100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18163 (or 18156 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 25142445100 its reverse (154424152), we get a palindrome (25296869252).

The spelling of 25142445100 in words is "twenty-five billion, one hundred forty-two million, four hundred forty-five thousand, one hundred".