15131243525 has 12 divisors (see below), whose sum is σ = 18765977472. Its totient is φ = 12102907440.

The previous prime is 15131243509. The next prime is 15131243527. The reversal of 15131243525 is 52534213151.

It is not a de Polignac number, because 15131243525 - 2⁴ = 15131243509 is a prime.

It is a super-2 number, since 2×15131243525² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15131243491 and 15131243500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15131243527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104972 + ... + 203178.

It is an arithmetic number, because the mean of its divisors is an integer number (1563831456).

Almost surely, 2^15131243525 is an apocalyptic number.

It is an amenable number.

15131243525 is a deficient number, since it is larger than the sum of its proper divisors (3634733947).

15131243525 is an equidigital number, since it uses as much as digits as its factorization.

15131243525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104380 (or 104375 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

Adding to 15131243525 its reverse (52534213151), we get a palindrome (67665456676).

The spelling of 15131243525 in words is "fifteen billion, one hundred thirty-one million, two hundred forty-three thousand, five hundred twenty-five".