1016650421325 has 288 divisors, whose sum is σ = 2311623475200. Its totient is φ = 414865152000.

The previous prime is 1016650421321. The next prime is 1016650421329. The reversal of 1016650421325 is 5231240566101.

1016650421325 is a `hidden beast` number, since 1 + 0 + 16 + 6 + 504 + 2 + 132 + 5 = 666.

1016650421325 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1016650421321) and next prime (1016650421329).

It is not a de Polignac number, because 1016650421325 - 2² = 1016650421321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1016650421325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016650421321) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 261414981 + ... + 261418869.

It is an arithmetic number, because the mean of its divisors is an integer number (8026470400).

Almost surely, 2^{1016650421325} is an apocalyptic number.

1016650421325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1016650421325 is an abundant number, since it is smaller than the sum of its proper divisors (1294973053875).

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

1016650421325 is a wasteful number, since it uses less digits than its factorization.

1016650421325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193 (or 4185 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 1016650421325 its reverse (5231240566101), we get a palindrome (6247890987426).

The spelling of 1016650421325 in words is "one trillion, sixteen billion, six hundred fifty million, four hundred twenty-one thousand, three hundred twenty-five".