1021063651025 has 24 divisors (see below), whose sum is σ = 1383573883104. Its totient is φ = 741326566400.

The previous prime is 1021063651007. The next prime is 1021063651031. The reversal of 1021063651025 is 5201563601201.

It is not a de Polignac number, because 1021063651025 - 2¹⁶ = 1021063585489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021063650982 and 1021063651000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3001232 + ... + 3324081.

It is an arithmetic number, because the mean of its divisors is an integer number (57648911796).

Almost surely, 2^{1021063651025} is an apocalyptic number.

It is an amenable number.

1021063651025 is a deficient number, since it is larger than the sum of its proper divisors (362510232079).

1021063651025 is a wasteful number, since it uses less digits than its factorization.

1021063651025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6325921 (or 6325916 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 1021063651025 in words is "one trillion, twenty-one billion, sixty-three million, six hundred fifty-one thousand, twenty-five".