100641025 has 12 divisors (see below), whose sum is σ = 125254012. Its totient is φ = 80216640.

The previous prime is 100641001. The next prime is 100641041. The reversal of 100641025 is 520146001.

It is a Cunningham number, because it is equal to 10032²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 7884864 + 92756161 = 2808^2 + 9631^2 .

It is not a de Polignac number, because 100641025 - 2¹⁷ = 100509953 is a prime.

It is a Duffinian number.

100641025 is a modest number, since divided by 641025 gives 100 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 100640993 and 100641011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342 + ... + 14191.

Almost surely, 2^100641025 is an apocalyptic number.

It is an amenable number.

100641025 is a deficient number, since it is larger than the sum of its proper divisors (24612987).

100641025 is a wasteful number, since it uses less digits than its factorization.

100641025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14820 (or 14815 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 100641025 is about 10032.0000498405. Note that the first 4 decimals coincide. The cubic root of 100641025 is about 465.1485631598.

Adding to 100641025 its reverse (520146001), we get a palindrome (620787026).

The spelling of 100641025 in words is "one hundred million, six hundred forty-one thousand, twenty-five".