1008025036021 has 4 divisors (see below), whose sum is σ = 1008027044032. Its totient is φ = 1008023028012.

The previous prime is 1008025036019. The next prime is 1008025036027. The reversal of 1008025036021 is 1206305208001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1008025036021 - 2¹ = 1008025036019 is a prime.

It is a super-2 number, since 2×1008025036021² (a number of 25 digits) contains 22 as substring.

It is the 1004005-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1008025036027) by changing a digit.

It is a nontrivial repunit in base 1004004.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500500 + ... + 1505506.

It is an arithmetic number, because the mean of its divisors is an integer number (252006761008).

It is a 502002-hyperperfect number.

Almost surely, 2^{1008025036021} is an apocalyptic number.

It is an amenable number.

1008025036021 is a deficient number, since it is larger than the sum of its proper divisors (2008011).

1008025036021 is a wasteful number, since it uses less digits than its factorization.

1008025036021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008010.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 1008025036021 in words is "one trillion, eight billion, twenty-five million, thirty-six thousand, twenty-one".