15205255122 has 16 divisors (see below), whose sum is σ = 30453410880. Its totient is φ = 5061268272.

The previous prime is 15205254997. The next prime is 15205255123. The reversal of 15205255122 is 22155250251.

It is a self number, because there is not a number n which added to its sum of digits gives 15205255122.

It is not an unprimeable number, because it can be changed into a prime (15205255123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1782918 + ... + 1791425.

It is an arithmetic number, because the mean of its divisors is an integer number (1903338180).

Almost surely, 2^15205255122 is an apocalyptic number.

15205255122 is an abundant number, since it is smaller than the sum of its proper divisors (15248155758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15205255122 is a wasteful number, since it uses less digits than its factorization.

15205255122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575057.

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 15205255122 in words is "fifteen billion, two hundred five million, two hundred fifty-five thousand, one hundred twenty-two".