2021104410625 has 20 divisors (see below), whose sum is σ = 2531870570196. Its totient is φ = 1612851200000.

The previous prime is 2021104410613. The next prime is 2021104410649. The reversal of 2021104410625 is 5260144011202.

It can be written as a sum of positive squares in 10 ways, for example, as 497837491776 + 1523266918849 = 705576^2 + 1234207^2 .

It is not a de Polignac number, because 2021104410625 - 2⁹ = 2021104410113 is a prime.

It is a super-2 number, since 2×2021104410625² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021104410593 and 2021104410602.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3781504 + ... + 4282753.

Almost surely, 2^{2021104410625} is an apocalyptic number.

2021104410625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2021104410625 is a deficient number, since it is larger than the sum of its proper divisors (510766159571).

2021104410625 is an frugal number, since it uses more digits than its factorization.

2021104410625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8064678 (or 8064663 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 2021104410625 its reverse (5260144011202), we get a palindrome (7281248421827).

The spelling of 2021104410625 in words is "two trillion, twenty-one billion, one hundred four million, four hundred ten thousand, six hundred twenty-five".