15225622720 has 336 divisors, whose sum is σ = 46780118784. Its totient is φ = 4585420800.

The previous prime is 15225622703. The next prime is 15225622723. The reversal of 15225622720 is 2722652251.

It is not an unprimeable number, because it can be changed into a prime (15225622723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23678719 + ... + 23679361.

It is an arithmetic number, because the mean of its divisors is an integer number (139226544).

Almost surely, 2^15225622720 is an apocalyptic number.

15225622720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15225622720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23390059392).

15225622720 is an abundant number, since it is smaller than the sum of its proper divisors (31554496064).

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

15225622720 is a wasteful number, since it uses less digits than its factorization.

15225622720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 15225622720 in words is "fifteen billion, two hundred twenty-five million, six hundred twenty-two thousand, seven hundred twenty".