1550525125440 has 224 divisors, whose sum is σ = 5213990145024. Its totient is φ = 389040209920.

The previous prime is 1550525125439. The next prime is 1550525125477. The reversal of 1550525125440 is 445215250551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67341130 + ... + 67364150.

Almost surely, 2^{1550525125440} is an apocalyptic number.

1550525125440 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 1550525125440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2606995072512).

1550525125440 is an abundant number, since it is smaller than the sum of its proper divisors (3663465019584).

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

1550525125440 is a wasteful number, since it uses less digits than its factorization.

1550525125440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27185 (or 27175 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 39.

The spelling of 1550525125440 in words is "one trillion, five hundred fifty billion, five hundred twenty-five million, one hundred twenty-five thousand, four hundred forty".