1250016204500 has 144 divisors (see below), whose sum is σ = 3141316109568. Its totient is φ = 425674166400.

The previous prime is 1250016204497. The next prime is 1250016204509. The reversal of 1250016204500 is 54026100521.

It is a self number, because there is not a number n which added to its sum of digits gives 1250016204500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250016204509) 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, 77695457 + ... + 77711543.

Almost surely, 2^{1250016204500} is an apocalyptic number.

1250016204500 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 1250016204500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1570658054784).

1250016204500 is an abundant number, since it is smaller than the sum of its proper divisors (1891299905068).

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

1250016204500 is a wasteful number, since it uses less digits than its factorization.

1250016204500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16411 (or 16250 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 1250016204500 in words is "one trillion, two hundred fifty billion, sixteen million, two hundred four thousand, five hundred".