15121225952 has 72 divisors (see below), whose sum is σ = 34754559840. Its totient is φ = 6457274880.

The previous prime is 15121225901. The next prime is 15121225969. The reversal of 15121225952 is 25952212151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423449 + ... + 457767.

It is an arithmetic number, because the mean of its divisors is an integer number (482702220).

Almost surely, 2^15121225952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15121225952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17377279920).

15121225952 is an abundant number, since it is smaller than the sum of its proper divisors (19633333888).

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

15121225952 is a wasteful number, since it uses less digits than its factorization.

15121225952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34624 (or 34609 counting only the distinct ones).

The product of its digits is 18000, while the sum is 35.

The spelling of 15121225952 in words is "fifteen billion, one hundred twenty-one million, two hundred twenty-five thousand, nine hundred fifty-two".