15213225532 has 24 divisors (see below), whose sum is σ = 26748846432. Its totient is φ = 7570752000.

The previous prime is 15213225487. The next prime is 15213225551. The reversal of 15213225532 is 23552231251.

It is a junction number, because it is equal to n+sod(n) for n = 15213225494 and 15213225503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1257432 + ... + 1269472.

It is an arithmetic number, because the mean of its divisors is an integer number (1114535268).

Almost surely, 2^15213225532 is an apocalyptic number.

It is an amenable number.

15213225532 is a deficient number, since it is larger than the sum of its proper divisors (11535620900).

15213225532 is a wasteful number, since it uses less digits than its factorization.

15213225532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13509 (or 13507 counting only the distinct ones).

The product of its digits is 18000, while the sum is 31.

Adding to 15213225532 its reverse (23552231251), we get a palindrome (38765456783).

The spelling of 15213225532 in words is "fifteen billion, two hundred thirteen million, two hundred twenty-five thousand, five hundred thirty-two".