15505425012000 has 768 divisors, whose sum is σ = 65513693306880. Its totient is φ = 3110800896000.

The previous prime is 15505425011981. The next prime is 15505425012013. The reversal of 15505425012000 is 21052450551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 26506677 + ... + 27085323.

It is an arithmetic number, because the mean of its divisors is an integer number (85304288160).

Almost surely, 2^{15505425012000} is an apocalyptic number.

15505425012000 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 15505425012000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32756846653440).

15505425012000 is an abundant number, since it is smaller than the sum of its proper divisors (50008268294880).

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

15505425012000 is a wasteful number, since it uses less digits than its factorization.

15505425012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578722 (or 578704 counting only the distinct ones).

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

Adding to 15505425012000 its reverse (21052450551), we get a palindrome (15526477462551).

The spelling of 15505425012000 in words is "fifteen trillion, five hundred five billion, four hundred twenty-five million, twelve thousand".