15122225044 has 24 divisors (see below), whose sum is σ = 27402467400. Its totient is φ = 7293444480.

The previous prime is 15122225029. The next prime is 15122225071. The reversal of 15122225044 is 44052222151.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6282464644 + 8839760400 = 79262^2 + 94020^2 .

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, 61642 + ... + 184510.

It is an arithmetic number, because the mean of its divisors is an integer number (1141769475).

Almost surely, 2^15122225044 is an apocalyptic number.

It is an amenable number.

15122225044 is a deficient number, since it is larger than the sum of its proper divisors (12280242356).

15122225044 is a wasteful number, since it uses less digits than its factorization.

15122225044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123963 (or 123961 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 15122225044 its reverse (44052222151), we get a palindrome (59174447195).

The spelling of 15122225044 in words is "fifteen billion, one hundred twenty-two million, two hundred twenty-five thousand, forty-four".