15000122505 has 16 divisors (see below), whose sum is σ = 24132798144. Its totient is φ = 7955864640.

The previous prime is 15000122491. The next prime is 15000122507. The reversal of 15000122505 is 50522100051.

It is not a de Polignac number, because 15000122505 - 2¹⁰ = 15000121481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15000122507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2759739 + ... + 2765168.

It is an arithmetic number, because the mean of its divisors is an integer number (1508299884).

Almost surely, 2^15000122505 is an apocalyptic number.

15000122505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15000122505 is a deficient number, since it is larger than the sum of its proper divisors (9132675639).

15000122505 is a wasteful number, since it uses less digits than its factorization.

15000122505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5525096.

The product of its (nonzero) digits is 500, while the sum is 21.

Adding to 15000122505 its reverse (50522100051), we get a palindrome (65522222556).

The spelling of 15000122505 in words is "fifteen billion, one hundred twenty-two thousand, five hundred five".