15225125205142 has 32 divisors (see below), whose sum is σ = 24270682262400. Its totient is φ = 7142927390208.

The previous prime is 15225125205139. The next prime is 15225125205149. The reversal of 15225125205142 is 24150252152251.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15225125205149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2907792 + ... + 6237427.

It is an arithmetic number, because the mean of its divisors is an integer number (758458820700).

Almost surely, 2^{15225125205142} is an apocalyptic number.

15225125205142 is a deficient number, since it is larger than the sum of its proper divisors (9045557057258).

15225125205142 is a wasteful number, since it uses less digits than its factorization.

15225125205142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9145660.

The product of its (nonzero) digits is 80000, while the sum is 37.

Adding to 15225125205142 its reverse (24150252152251), we get a palindrome (39375377357393).

The spelling of 15225125205142 in words is "fifteen trillion, two hundred twenty-five billion, one hundred twenty-five million, two hundred five thousand, one hundred forty-two".