15225130442 has 8 divisors (see below), whose sum is σ = 23625202500. Its totient is φ = 7350062944.

The previous prime is 15225130441. The next prime is 15225130457. The reversal of 15225130442 is 24403152251.

It can be written as a sum of positive squares in 2 ways, for example, as 14455012441 + 770118001 = 120229^2 + 27751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (15225130441) 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 3 ways as a sum of consecutive naturals, for example, 131251067 + ... + 131251182.

Almost surely, 2^15225130442 is an apocalyptic number.

15225130442 is a deficient number, since it is larger than the sum of its proper divisors (8400072058).

15225130442 is a wasteful number, since it uses less digits than its factorization.

15225130442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262502280.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 15225130442 its reverse (24403152251), we get a palindrome (39628282693).

The spelling of 15225130442 in words is "fifteen billion, two hundred twenty-five million, one hundred thirty thousand, four hundred forty-two".