841998936025 has 81 divisors (see below), whose sum is σ = 1194813976509. Its totient is φ = 588265554240.

The previous prime is 841998936019. The next prime is 841998936041. The reversal of 841998936025 is 520639899148.

The square root of 841998936025 is 917605.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 217026471321 + 624972464704 = 465861^2 + 790552^2 .

It is not a de Polignac number, because 841998936025 - 2³ = 841998936017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1133241804 + ... + 1133242546.

Almost surely, 2^841998936025 is an apocalyptic number.

841998936025 is the 917605-th square number.

841998936025 is the 458803-rd centered octagonal number.

It is an amenable number.

841998936025 is a deficient number, since it is larger than the sum of its proper divisors (352815040484).

841998936025 is an equidigital number, since it uses as much as digits as its factorization.

841998936025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 64.

Multiplying 841998936025 by its sum of digits (64), we get a square (53887931905600 = 7340840²).

The spelling of 841998936025 in words is "eight hundred forty-one billion, nine hundred ninety-eight million, nine hundred thirty-six thousand, twenty-five".