1011503888325 has 480 divisors, whose sum is σ = 2390590920960. Its totient is φ = 412115558400.

The previous prime is 1011503888303. The next prime is 1011503888327. The reversal of 1011503888325 is 5238883051101.

1011503888325 is a `hidden beast` number, since 101 + 1 + 503 + 8 + 8 + 8 + 32 + 5 = 666.

It is not a de Polignac number, because 1011503888325 - 2¹⁸ = 1011503626181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011503888327) by changing a digit.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 370377210 + ... + 370379940.

It is an arithmetic number, because the mean of its divisors is an integer number (4980397752).

Almost surely, 2^{1011503888325} is an apocalyptic number.

1011503888325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1011503888325 is an abundant number, since it is smaller than the sum of its proper divisors (1379087032635).

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

1011503888325 is a wasteful number, since it uses less digits than its factorization.

1011503888325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The spelling of 1011503888325 in words is "one trillion, eleven billion, five hundred three million, eight hundred eighty-eight thousand, three hundred twenty-five".